;
- Italic
- Italo-Turkish War
- Italy
- Itanium
- Itayose method
- Itoigawa-Shizuoka Tectonic Line
- Ivory Coast
- Ivy League
- Iwashimizu Festival
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- Iyo dialect
- Izanagi
- Izanagi economic boom of Japan
- Izanami
- Izu cat shark
- Izu thrush
- Izumi fever
- Izumo Oyashiro-kyo
- Izumo Taisha-kyo
- Izumo Temple
- Izumo dialect
- Izumo mythology
- Izvestia
- Iノード [アイノード]
- J
- J-curve effect
- J-stroke
- J. chinensis var. procumbens
- J;j [ジェー]
- JADMA
- JAERI
- JAG
- JAL
- JAL PAK
- JAL aeroplane
- JAL airplane
- JANTI
- JAS
- JAS [ジャス]
- JAS mark
- JASDAQ [ジャスダック]
- JASDAQ market
- JASRAC
- JASRAC [ジャスラック]
- JASマーク [ジャスマーク]
- JCCI
- JCG
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- JDBC
- JDEdwards
- JDK
- JEIDA
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- JETRO [ジェトロ]
- JFAE
- JGB
- JGSDF
- JI
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- JIS
- JIS [ジス]
- JIS mark
- JISA
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- JLPT
- JMA
- JMTR
- JMTR [ジェーエムティーアール]
- JOIS
- JP Bank
- JP Computer Emergency Response Term
- JPCERT-CC
- JPDR
- JPDR [ジェーピーディーアール]
- JPEG
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- JPNIC
- JR
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- JRA
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- Jack Frost
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- Jack of all trades
- Jack of all trades and master of none
- Jack the Ripper
- Jacksonian epilepsy
- Jacobi
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- Jacquard machine
- JaguarCTS
- Jainism
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- Jane Doe
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- Jansenism
- January
- January 28 Incident
- January 8-14
- Jap
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- Japan Academy award
- Japan Agricultural Standards
- Japan Air Lines
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- Japan Amateur Sports Association
- Japan Atomic Energy Research Institute
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- Japan Current
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- Japan Environmental Management Association for Industry
- Japan Federation of Employers' Associations
- Japan Fine Arts Exhibition
- Japan Foundation
- Japan Ground Self-Defense Force
- Japan Highway Public Corporation
- Japan Housing Finance Agency
- Japan Industrial Standards
- Japan Information Service Industry Association
- Japan International Cooperation Agency
- Japan Material Test Reactor
- Japan National Oil Corporation
- Japan New Party
- Japan Nuclear Technology Institute
- Japan Orthodox Church
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- Japan Post
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- Japan Power Demonstration Reactor
- Japan Railways
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- Japan bashing
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- Japan wax
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- Japan's Three Famous Mountains
- Japan's Three Holy Mountains
- Japan's Westernization movement during the Meiji era
- Japan's best
- Japan's envoy to Sui dynasty China
- Japan's first circulated coinage
- Japan's first coinage
- Japan's last lunisolar calendar
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- Japan-specific
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- Japanese National Railways
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- Japanese Red Army
- Japanese Sign Language
- Japanese Society for Rights of Authors
- Japanese Spanish mackerel
- Japanese Standard Time
- Japanese Western-style envelope
- Japanese Yen
- Japanese accentor
- Japanese alder
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- Japanese amateur sumo union
- Japanese amberjack
- Japanese anchovy
- Japanese and Chinese literature
- Japanese and Chinese medicine
- Japanese and Korean
- Japanese and Koreans
- Japanese andromeda
- Japanese anemone
- Japanese angel shark
- Japanese angelica tree
- Japanese apricot
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- Japanese ash
- Japanese aspen
- Japanese aster
- Japanese azalea
- Japanese babylon
- Japanese badger
- Japanese badminton
- Japanese banknote
- Japanese barberry
- Japanese bay scallop
- Japanese bead tree
- Japanese beautyberry
- Japanese beech
- Japanese beech tree
- Japanese beef
- Japanese beetle
- Japanese belladonna
- Japanese big leaf magnolia
- Japanese big-ear radix
- Japanese bigleaf magnolia
- Japanese bigleaf magnolia bark
- Japanese bilboquet
- Japanese bindweed
- Japanese birch
- Japanese bird cherry
- Japanese blue crab
- Japanese blue oak
- Japanese bluefish
- Japanese bobtail
- Japanese bondage torture
- Japanese box lunch
- Japanese box tree
- Japanese boxwood
- Japanese brown frog
- Japanese buckthorn
- Japanese buckwheat noodles
- Japanese bullfinch
- Japanese bush cranberry
- Japanese bush warbler
- Japanese bush warbler & wagtail
- Japanese butterfish
- Japanese butterfly bush
- Japanese butterflyfish
- Japanese cafeteria
- Japanese calendar
- Japanese calendar's six labels
- Japanese capital founded by emperor Kammu in 784
- Japanese card game
- Japanese carpenter ant
- Japanese carpenter bee
- Japanese carpet shark
- Japanese casual dish
- Japanese catshark
- Japanese cedar
- Japanese chaff flower
- Japanese character
- Japanese character set row and column index
- Japanese characters
- Japanese cherry birch
- Japanese chervil
- Japanese chess
- Japanese chessboard
- Japanese chestnut
- Japanese children's game
- Japanese chimera
- Japanese chiton
- Japanese chromis
- Japanese cinnamon
- Japanese citizen
- Japanese citizens
- Japanese citizenship
- Japanese classical drama
- Japanese classical musical instruments
- Japanese classics
- Japanese clawed salamander
- Japanese clethra
- Japanese climbing fern
- Japanese clothes
- Japanese clothing
- Japanese clothing manufacture
- Japanese clover
- Japanese cobra lily
- Japanese cockchafer
- Japanese cockroach
- Japanese coiffure
- Japanese common squid
- Japanese company
- Japanese company registry service
- Japanese confectionery
- Japanese confectionery maker
- Japanese confectionery store
- Japanese constitution
- Japanese cooking
- Japanese copperhead
- Japanese cormorant
- Japanese cornel
- Japanese cornelian-cherry
- Japanese cracker
- Japanese crane
- Japanese crayfish
- Japanese crested ibis
- Japanese crucian carp
- Japanese curry with an additional topping
- Japanese custom of apology followed by reclusion when caught doing something
- Japanese cypress
- Japanese dace
- Japanese dance competition
- Japanese dancing
- Japanese dancing mouse
- Japanese delegate
- Japanese delegation
- Japanese descent
- Japanese dessert consisting of two slices of kasutera with red bean jam in between
- Japanese dialect from Kyushu
- Japanese dock
- Japanese domain name
- Japanese domestic
- Japanese dormouse
- Japanese drum
- Japanese eagle ray
- Japanese earthquake scale
- Japanese economy
- Japanese education system
- Japanese eel
- Japanese egg cockle
- Japanese eight-barbel loach
- Japanese elm
- Japanese emperor oak
- Japanese encephalitis
- Japanese environment
- Japanese expatriates
- Japanese fan made of feathers
- Japanese fatsia
- Japanese festival game of fishing balloons
- Japanese fiber banana
- Japanese fiber banana flower
- Japanese film
- Japanese fire belly newt
- Japanese flag used on military ships
- Japanese flavour
- Japanese fleeceflower
- Japanese flowering ash
- Japanese fluvial sculpin
- Japanese foliage spider
- Japanese food
- Japanese freshwater crab
- Japanese garden juniper
- Japanese geoduck
- Japanese giant salamander
- Japanese giant weevil
- Japanese ginger
- Japanese ginseng
- Japanese globeflower
- Japanese government
- Japanese government bond
- Japanese government departments
- Japanese government employment agency
- Japanese grammar
- Japanese grass vole
- Japanese green gentian
- Japanese green woodpecker
- Japanese gregory
- Japanese grenadier anchovy
- Japanese grosbeak
- Japanese hackberry
- Japanese halfbeak
- Japanese hare
- Japanese harp with three to five strings
- Japanese hazel
- Japanese history
- Japanese holly
- Japanese honewort
- Japanese honeybee
- Japanese honeysuckle
- Japanese honeywort
- Japanese hop
- Japanese hop hornbeam
- Japanese hornbeam
- Japanese hornet
- Japanese horse chestnut
- Japanese horse mackerel
- Japanese hotel
- Japanese house bat
- Japanese huchen
- Japanese hyphenation
- Japanese immigrant to USA
- Japanese imperial year
- Japanese in Japan proper
- Japanese inn priding itself on its cuisine
- Japanese insect
- Japanese international telecommunications company
- Japanese iris
- Japanese ivory shell
- Japanese jack mackerel
- Japanese kana copybook
- Japanese katydid
- Japanese kelp
- Japanese kerria
- Japanese knife
- Japanese knotweed
- Japanese ko-so-a-do demonstratives
- Japanese language
- Japanese lantern
- Japanese laurel
- Japanese lawsuit involving cases where hospitalized patients contracted Creutzfeld-Jakob disease from infected transplants
- Japanese leek
- Japanese linden
- Japanese linguistics
- Japanese literature
- Japanese living in America
- Japanese living overseas
- Japanese lobster
- Japanese localization
- Japanese lunchroom
- Japanese macaque
- Japanese mahonia
- Japanese male formal attire
- Japanese maple
- Japanese marsh warbler
- Japanese marten
- Japanese mathematics
- Japanese mattress
- Japanese mazus
- Japanese meal
- Japanese medieval text that chronicles events of the Kamakura Shogunate
- Japanese medlar
- Japanese millet
- Japanese mitten crab
- Japanese mode
- Japanese money
- Japanese monkey
- Japanese moon moth
- Japanese morning glory
- Japanese mountain asceticism-shamanism incorporating Shinto and Buddhist concepts
- Japanese muffin containing bean jam
- Japanese mugwort
- Japanese music
- Japanese name
- Japanese nationalistic ideological movement
- Japanese nationality
- Japanese nationals resident abroad
- Japanese night heron
- Japanese nightingale
- Japanese nipplewort
- Japanese nutmeg tree
- Japanese oak silkmoth
- Japanese omelette
- Japanese onion
- Japanese orchestra
- Japanese pagoda tree
- Japanese painting
- Japanese pampas grass
- Japanese paper
- Japanese paradise flycatcher
- Japanese parrotfish
- Japanese parsley
- Japanese paspalum
- Japanese pear
- Japanese people
- Japanese pepper
- Japanese peppermint
- Japanese persimmon
- Japanese person
- Japanese pharmacopeia
- Japanese pheasant
- Japanese philology
- Japanese photinia
- Japanese pickled vegetables
- Japanese pilchard
- Japanese pinecone fish
- Japanese pipistrelle
- Japanese pirates
- Japanese playing cards
- Japanese plum
- Japanese poem
- Japanese poetry
- Japanese pond smelt
- Japanese poplar
- Japanese predacious diving beetle
- Japanese prickly ash
- Japanese privet
- Japanese product
- Japanese production
- Japanese pronunciation of a kanji
- Japanese puppet theatre
- Japanese puppet theatre in which a narrative is accompanied by a shamisen
- Japanese quail
- Japanese quince
- Japanese raisin tree
- Japanese rake
- Japanese rat snake
- Japanese reading of a Chinese character
- Japanese reading of a kanji
- Japanese record
- Japanese rectangular envelope
- Japanese red pine
- Japanese red-backed vole
- Japanese religious census used to repress Christians
- Japanese representative
- Japanese representatives
- Japanese residents in another country
- Japanese residing abroad
- Japanese restaurant
- Japanese rhodea
- Japanese rice
- Japanese rice wine
- Japanese river otter
- Japanese robin
- Japanese rose
- Japanese rowan
- Japanese sable
- Japanese sago palm
- Japanese sand lance
- Japanese sardine
- Japanese sardinella
- Japanese scallop
- Japanese scull
- Japanese sea bass
- Japanese sea fig
- Japanese sea perch
- Japanese serow
- Japanese seven-tone gagaku scale
- Japanese seven-tone gagaku scale similar to Dorian mode
- Japanese seven-tone gagaku scaleimilar to Mixolydian mode
- Japanese ship
- Japanese shubunkin goldfish variety
- Japanese side
- Japanese silver leaf
- Japanese silverberry
- Japanese singing and dancing girl
- Japanese skimmia
- Japanese smile
- Japanese smoking pipe
- Japanese snake gourd
- Japanese snowball
- Japanese snowbell
- Japanese society
- Japanese socks
- Japanese soup bowl
- Japanese spaniel
- Japanese sparrowhawk
- Japanese spatterdock
- Japanese speaker
- Japanese spear lobster
- Japanese spindle tree
- Japanese spindletree
- Japanese spineless cuttlefish
- Japanese spirea
- Japanese spirit with Western learning
- Japanese squirrel
- Japanese star anise
- Japanese stewartia
- Japanese stilt grass
- Japanese straw floor coverings
- Japanese street gang
- Japanese striped loach
- Japanese style
- Japanese style of calligraphy based on the gyousho style popular in the Edo period
- Japanese sumac
- Japanese sweet coltsfoot
- Japanese sweet flag
- Japanese sweets made of bean paste
- Japanese sweets made with glutinous rice and azuki bean paste
- Japanese sword
- Japanese syllabary
- Japanese tea
- Japanese territory
- Japanese text
- Japanese text book
- Japanese text books
- Japanese text entry front-end program
- Japanese thistle
- Japanese thrush
- Japanese tiger beetle
- Japanese tiger prawn
- Japanese timber bamboo
- Japanese tissue
- Japanese title given to foreign work
- Japanese toad
- Japanese tofu and vegetable chowder
- Japanese topeshark
- Japanese traditional architectural structure
- Japanese traditional architectural style where the main entrance is on one or both of the gabled sides
- Japanese traditional informal female sitting posture
- Japanese translation
- Japanese translation of Buddhist hymns of praise
- Japanese transverse bamboo flute
- Japanese tree lilac
- Japanese tungoil tree
- Japanese umbrella
- Japanese umbrella pine
- Japanese variety of music box
- Japanese varnishtree
- Japanese vellum
- Japanese verb group
- Japanese version
- Japanese vest
- Japanese voiced consonant mark
- Japanese wagtail
- Japanese wakin goldfish variety
- Japanese water shrew
- Japanese waxwing
- Japanese weasel
- Japanese white birch
- Japanese white birch oil
- Japanese white pine
- Japanese white-beam
- Japanese white-eye
- Japanese whiting
- Japanese wineberry
- Japanese wing nut
- Japanese winterberry
- Japanese wobbegong
- Japanese wolf
- Japanese women's hairstyle comprised of a long braid tied up in a loop with a ribbon
- Japanese wood ant
- Japanese wood pigeon
- Japanese wooden clogs
- Japanese woodpecker
- Japanese word constructed of elements from one or more English terms
- Japanese word of Western origin
- Japanese word processor
- Japanese word-chain game
- Japanese word-processing
- Japanese writing paper
- Japanese writing paper used for calligraphy
- Japanese yam
- Japanese yellow bunting
- Japanese yellow loosestrife
- Japanese yew
- Japanese zelkova
- Japanese-Chinese
- Japanese-English
- Japanese-English dictionary
- Japanese-English interpreting
- Japanese-English translation
- Japanese-European
- Japanese-French
- Japanese-French dictionary
- Japanese-German
- Japanese-German dictionary
- Japanese-Indian
- Japanese-Italian
- Japanese-Italian dictionary
- Japanese-Korean dictionary
- Japanese-North Korean
- Japanese-Russian
- Japanese-Soviet
- Japanese-Spanish
- Japanese-Spanish dictionary
- Japanese-language dictionary
- Japanese-language education
- Japanese-language newspaper
- Japanese-made
- Japanese-style
- Japanese-style book binding
- Japanese-style business management
- Japanese-style confectionary store
- Japanese-style garden
- Japanese-style meal
- Japanese-style mirror
- Japanese-style quotation marks
- Japanese-style restaurant with an attached inn
- Japanese-style ritual saddle
- Japanese-style room
- Japanese-style ship
- Japanese-style writing desk
- Japanesque
- Japanimation
- Japanisation
- Japanism
- Japanization
- Japanologist
- Japanology
- Japanophile
- Japanophiles
- Japantown
- Japlish
- Japonaiserie
- Japonica
- Japonisme
- Jasminum umile var. revolutum
- Java
- Java rabbitfish
- Java rice finch
- Java sparrow
- Java water dropwort
- Java2
- JavaBeans
- JavaOS
- JavaScript
- JavaServer
- JavaSoft
- JavaStation
- JavaWebServer
- JavaWorkshop
- Javan rhinoceros
- Javanese
- Jeet Kune Do
- Jehovah
- Jehovah's Witnesses
- Jekyll and Hyde
- Jeli
- Jemaah Islamiah
- Jeremiah
- Jersey
- Jersey cudweed
- Jerusalem artichoke
- Jesuit
- Jesuits
- Jesus
- Jesus Christ
- Jet Propulsion Laboratory
- Jew
- Jew's ear mushroom
- Jew's harp
- Jew's mallow
- Jewish
- Jewish calendar
- Jewish person
- Jews
- Jezo spruce
- Jian era
- Jie
- Jikko-kyo
- Jim Crow
- Jin
- Jingo-keiun era
- Jingu Stadium
- Jingu-kyo
- Jinhua ham
- Jini
- Jinitiator
- Jinki era
- Jinshin revolt
- Jintan
- Jiryaku era
- Jishou era
- Jiyuu Rengou
- Jiyuutou and Koumeitou
- Jizo
- Jizo Festival
- Job
- Job Control Language
- Job Entry System
- Job's tears
- Jodo
- Jodo Shinshu
- Jodo Shinshu Buddhist uprising
- Joe Bloggs
- Joe Blow
- Joel
- Joetsu Main Line
- John
- John Bull
- John Doe
- John Dory
- John Travolta
- Joint Chiefs of Staff
- Joint Staff Council
- Jokyu uprising
- Jolly Rodger
- Jolly Roger
- Jomon period
- Jomon ware
- Jonah
- Jonathan apple
- Jordan
- Joseon Dynasty
- Joseph's coat
- Joseph's-coat
- Josephson
- Josephson device
- Josephson effect
- Josephson junction
- Joshua
- Jouan era
- Jouei era
- Jougan era
- Jougan period
- Jougen era
- Jouhei era
- Jouhou era
- Jouji era
- Joukyou era
- Joukyuu era
- Joule's law
- Jouou era
- Journey to the West
- Jouryaku era
- Joushouji sect
- Joutoku era
- Jouwa era
- Jside.com
- Ju-on
- Judaism
- Judea
- Judge Impeachment Court
- Judge Indictment Committee
- Judgment Day
- Judicial Research and Training Institute
- Juei era
- Jughead
- Juglandaceae
- Juglandales
- Juglar cycle
- Juki Net
- Juki card
- Julian calendar
- Julius
- July
- July Monarchy
- July Revolution
- Juncaceae
- June
- June bride
- Junior College of Nutrition
- Juniperus procumbens
- Juniperus rigida
- Junlon
- Juno
- Jupiter
- Jupiter & Saturn
- Jupiter's Great Red Spot
- Jurassic
- Jurassic Period
- Juris Doctor
- Just In Time Compiler
- Just Window
- Just a short note to tell you ...
- Just as I thought
- Just you wait
- JustNet
- JustSystem
- Justice Party
- Justinian Code
- Jカーブ効果 [ジェーカーブこうか]
- K
- K-1
- K-T boundary
- K-meson
- K5
- K56flex
- K56x2
- K6
- K;k [ケー]
- KA9Q
- KDD
- KGB
- KGB [カーゲーベー;ケージービー]
- KI
- KIA
- KIOSK mode
- KIT
- KIVASOFT
- KK
- KKK
- KKK [ケーケーケー]
- KO
- KOSPI
- KSDS
- KY [ケーワイ;ケイーワイ]
- Kaaba
- Kabuki-za
- Kachin
- Kadima
- Kaei era
- Kaempfer cicada
- Kaffir lily
- Kaffir lime
- Kagawa prefecture
- Kagen era
- Kagoshima prefecture
- Kagutsuchi
- Kahlua
- Kahn
- Kahou era
- Kaido crab apple
- Kaiseijo
- Kaiser
- Kakei era
- Kakitsu era
- Kakyou era
- Kalabeck's monitor
- Kalacakra
- Kaleida
- Kaliglas
- Kalman filter
- Kamakura period
- Kamakura shogunate
- Kamakura- and Muromachi-period government office
- Kamasutra
- Kambun era
- Kambyou era
- Kamchatka stonecrop
- Kampou era
- Kampyou era
- Kan'ei era
- Kan'en era
- Kan'ou era
- Kanagawa Incident
- Kanagawa prefecture
- Kanda Festival
- Kandelia obovata
- Kanemi oil PCB poisoning
- Kanemi rice oil disease
- Kanemi rice oil disease incident
- Kangen era
- Kangi era
- Kanji era
- Kanji to English
- Kanji to English dictionary
- KanjiTalk
- Kanki era
- Kankou era
- Kanmon Straits
- Kanna era
- Kannin era
- Kannon
- Kannon Sutra
- Kannou era
- Kansai
- Kansai New Year decoration
- Kansai area
- Kansai dialect
- Kansai horse
- Kansai region
- Kansai-style sushi
- Kansas
- Kansei Reforms
- Kansei era
- Kanshou era
- Kant
- Kant-Laplace nebular hypothesis
- Kantei style of calligraphy
- Kanto Festival
- Kanto provinces
- Kanto region
- Kantoku era
- Kantou
- Kantou dialect
- Kanwa era
- Kanze school of noh
- Kanze style
- Kaou era
- Kaposi's sarcoma
- Karachi
- Karafuto
- Karaoke on demand
- Karatsu porcelain
- Karatsu ware
- Karen
- Karma
- Karnaugh diagram
- Karnaugh map
- Karoku era
- Karyaku era
- Kashmir
- Kashmir curry
- Kashmiri
- Kashou era
- Kashyapa Buddha
- Kassapa Buddha
- Kasuga Festival
- Kasuga Myoujin
- Kasyapa Buddha
- Katayama disease
- Katei era
- Katmai
- Katyusha rocket launcher
- Kawasaki
- Kawasaki disease
- Keel star
- Keep Left
- Keep Off!
- Keep at it
- Keep composed!
- Kegel muscle
- Kegon
- Keian era
- Keichou era
- Keien period
- Keigo used by employees in restaurants and other businesses
- Keiou era
- Keiun era
- Keizai Doyukai
- Kemmu era
- Kempou era
- Ken'ei era
- Kenchou era
- Kengen era
- Kenji era
- Kenkyuu era
- Kennelly-Heaviside layer
- Kennin era
- Kenryaku era
- Kent paper
- Kentoku era
- Kentucky
- Kentucky Fried Chicken
- Kenya
- Kenyan chromis
- Kepler's laws
- Keplerian telescope
- Kerama deer
- Kerberos
- Kermit
- Kerria japonica
- Key-Sequenced Data Set
- KeySQL
- KeyWeb Creater
- Keynesianism
- Khalji Dynasty
- Khersak
- Khilji
- Khilji Dynasty
- Khitigarbha-bodhisattva
- Khmer Rouge
- Khoi
- Khoi-khoin
- Khoikhoi
- Khoisan
- Kibana rhododendron
- Kibe sect
- Kimberley rock monitor
- Kimura Takuya
- Kindle
- Kindly excuse my reckless remarks
- King Dome
- King Wen and Confucius
- King of England
- King of occult know-how
- King's English
- King's goanna
- Kingdom of Heaven
- Kingdom of Wei
- Kings I
- Kings II
- Kinh
- Kinki
- Kinki Nippon Tetsudou
- Kinki region
- Kinmirai Seiji Kenkyukai
- Kinokuniya
- Kinpira-style sauteed burdock
- Kinuhikari
- Kirchhoff
- Kirchhoff's law
- Kirin
- Kisei Main Line
- Kiswahili
- Kitakyushu
- Kitchin cycle
- Kiyomi orange
- Kiyomori
- Kjellmaniella gyrata
- Klamath river lamprey
- Klaxon
- Kleene
- Klein bottle
- Klein's butterflyfish
- Klinefelter's syndrome
- Klingon
- Klunzinger's wrasse
- Knights Hospitalers
- Knights Hospitallers
- Knights Templar
- Knights Templars
- Knock
- Know thyself
- Knowbot
- Knowing what is right and not doing it is a want of courage
- Knudsen cell
- Kobe
- Kobe Dentetsu
- Kobe area
- Kobe beef
- Kobo Daishi is always with me
- Kodaira dimension
- Kodak
- Kodansha Manga Award
- Kodiak bear
- Kodou
- Koechel number
- Koeln
- Kofi
- Kofuku-no-Kagaku
- Koga Faction
- Kogi Shingon
- Kojien
- Kokumin Shinto
- Kolbasa
- Kolmogorov
- Komeito and Democratic Socialist Party
- Komintern
- Komodo dragon
- Komsomol
- Komura Faction
- Kona
- Kona coffee
- Konaki Jijii
- Konami Code
- Kondratieff cycle
- Kongo class destroyer
- Konjaku Monogatarishuu
- Konjikido
- Konjin
- Konkokyo
- Kopernikus
- Koran
- Koran angelfish
- Korea
- Korea & China
- Korea Composite Stock Price Index
- Korea-Japan
- Korean
- Korean Airways
- Korean War
- Korean and Vietnamese
- Korean anger syndrome
- Korean barbecue
- Korean bell
- Korean cherry
- Korean chipmunk
- Korean currency unit
- Korean female entertainer
- Korean floor heater
- Korean flute
- Korean food
- Korean golden bells
- Korean hill cherry
- Korean lamprey
- Korean lawn grass
- Korean lettuce
- Korean mussel
- Korean peninsula
- Korean person
- Korean shaku
- Korean spindletree
- Korean stew
- Korean style rice heated in a stone pot
- Korean yellow weasel
- Korean-style beef ribs
- Koreans living in Japan
- Koreans residing on Sakhalin island
- Korsakoff's psychosis
- Korsakoff's syndrome
- Koryo-dynasty tea bowl
- Koshien
- Koshihikari
- Kouan era
- Kouchi prefecture
- Kouchikai
- Kouchou era
- Kouei era
- Kougen era
- Kouhei era
- Kouhou era
- Kouji era
- Kouka era
- Koukoku era
- Kounin era
- Kounin-Jougan period
- Kouou era
- Kouro
- Kouryaku era
- Koushou era
- Koutai Shrine
- Kouwa era
- Kraepelin
- Krebs cycle
- Kremlin
- Kremlinology
- Kripke
- Krishna
- Kristallnacht
- Kristiania
- Kronecker
- Kronecker delta
- Krugerrand
- Kshatriya
- Ksitigarbha
- Ksitigarbha statue erected to help deliver miscarried and aborted fetuses to buddhahood
- Ksitigarbha who listens to people's complaints
- Ku Klux Klan
- KuTen code
- Kuan Yin
- Kuiper belt
- Kukai
- Kulturkampf
- Kumamoto
- Kumamoto prefecture
- Kumamoto rice shochu
- Kumaso
- Kumbhira
- Kundali
- Kung-Fu
- Kuninotokotachi no Mikoto
- Kuomintang
- Kurd
- Kurdish
- Kurdish New Year
- Kurile Islands
- Kuroshio Current
- Kurozumi-kyo
- Kusanagi no Tsurugi
- Kusha Sect
- Kushan
- Kushan dynasty
- Kusshi
- Kuwait
- Kuznets cycle
- Kuznets swings
- Kwangchow
- Kwangtung
- Kwannon
- Kwantung Army
- Kylix
- Kyocera
- Kyodo News Service
- Kyoho grape
- Kyoto
- Kyoto Gozan
- Kyoto Prefectural Police
- Kyoto Prize
- Kyoto Protocol
- Kyoto Symphony Orchestra
- Kyoto and vicinity
- Kyoto area festival held on the 11th lunar month
- Kyoto dialect
- Kyoto doll
- Kyoto products
- Kyoto pronunciation
- Kyoto style
- Kyoto woman
- Kyoto's young people
- Kyoto-Osaka
- Kyoto-Osaka region
- Kyoto-Osaka-Kobe
- Kyoto-Osaka-Nara
- Kyoto-Shiga district
- Kyoto-fu and remaining prefectures
- Kyouhou Reforms
- Kyouhou era
- Kyouhou shaku
- Kyouroku era
- Kyoutoku era
- Kyouun era
- Kyouwa era
- Kyrgyz
- Kyrgyzstan
- Kyushu
- Kyushu Institute of Technology
- Kyushu dialect
- Kyushu region
- Kyushu sumo tournament
- Kyuuan era
- Kyuuju era
- K−1 [ケイワン]
- K−T境界;KT境界 [ケイーティーきょうかい(K−T境界);ケイティーきょうかい(KT境界)]
- K粒子 [ケーりゅうし]
- L
- L size
- L'Association Internationale des Etudiants en Sciences Economiques et Commercial
- L10n
- L;l [エル]
- LA
- LAN
- LAN Manager
- LAN [ラン]
- LAN emulation
- LANDSAT
- LANエミュレーション [ランエミュレーション]
- LAP
- LAP [ラップ]
- LAPD
- LAPM
- LASH
- LASIK
- LAT
- LCD
- LCD [エルシーディー]
- LD
- LDAP
- LDL
- LDL [エルディーエル]
- LDP
- LED
- LED [エルイーディー]
- LEO
- LFG
- LFG [エルエフジー]
- LFO
- LGP
- LHA
- LHC
- LHarc
- LI
- LIFO
- LIPS
- LISP
- LL
- LL [エルエル]
- LLC
- LLC [エルエルシー]
- LLD
- LMAO
- LNG
- LOCA
- LOCA [ロカ]
- LOCIS
- LOHAS
- LOL
- LP
- LP record
- LPD
- LPE
- LPE [エルピーイー]
- LPF
- LPS
- LPS [エルピーエス]
- LRC
- LS
- LSAP
- LSAT
- LSB
- LSD
- LSD [エルエスディー]
- LSI
- LST
- LTCB
- LTE
- LU
- LUT
- LVAD
- LWR
- LWR [エルダブリューアール]
- LZ
- La Gioconda
- La Nina
- La Salle
- La forza del destino
- LaTeX
- Labiatae
- Labor Day
- Labor Minister
- Labor Party
- Labor Standards Act
- Labor Union Law
- Labour Party
- Labour Relations Commission for Seafarers
- Labour Thanksgiving Day
- Labour and Welfare
- Labracoglossa argentiventris
- Laccotrephes japonensis
- Lacerta
- Lachdebrere's pygmy goby
- Lacoste
- Lactarius laeticolorus
- Lactobacillus bifidus
- Ladies and Gentlemen!
- Ladies!
- Ladin
- Lady
- Lady Day
- Lady Luck
- Lagenaria siceraria var. depressa
- Lagenaria siceraria var. gourda
- Lagoon Hachiro
- Lake Biwa
- Lake Biwa catfish
- Lake Chuzenji
- Lakshmi
- Lama's clothes
- Lamaism
- Lamarckian evolutionary theory in which individuals lose characteristics that are not used and develop characteristics that are often used
- Lamarckism
- Lamaze
- Lamaze technique
- Lambda rocket
- Lamentations
- Lamiaceae
- Lamiales
- Laminaria longissima
- Laminaria ochotensis
- Lamium album var. barbatum
- Lamna
- Lamnidae
- Lampetra
- Lancel
- Land Cruiser
- Land of the Rising Sun
- Langerhans
- Lantern Festival
- Lantern Festival dance
- Lanvin
- Lao-tse
- Lao-tzu
- Laocoon
- Laos
- Laozi and Zhuangzi
- Laplace's demon
- Lapland
- Laportea bulbifera
- Lardizabalaceae
- Large Hadron Collider
- Large Magellanic Cloud
- Large-Scale Earthquake Countermeasures Law
- Large-scale Retail Store Law
- Large-scale Retail Stores Law
- Lark
- Laserwriter
- Laspeyres index
- Lassa fever
- Last Judgment
- Later Han Dynasty
- Later Jin Dynasty
- Later Liang Dynasty
- Later Tang Dynasty
- Later Zhou Dynasty
- Latham's snipe
- Lathyrus quinquenervius
- Latin
- Latin America
- Latin Empire
- Latin alphabet
- Latin character
- Latin font
- Latin literature
- Latin music
- Latin peoples
- Latin races
- Latin square
- Latin-American
- Latin-American rhythm
- Latin-Japanese
- Latino
- Latter-day Saints
- Latvia
- Latvian
- Lauraceae
- Laurasia
- Lausanne Conference
- Lausanne school
- Lavie
- Law Concerning Special Measures Against Dioxins
- Law Concerning Special Measures for Conservation of Lake Water Quality
- Law Concerning the Promotion of Specific Non-Profit Organization Activities
- Law for the Protection of Cultural Properties
- Law for the Protection of Personal Data Held by Administrative Organs
- Law for the Protection of Personal Information Retained by Independent Administrative Institutions
- Law of the Sea
- Laysan albatross
- Lazurite
- Le Chatelier's principle
- Le Chatlier's law
- Le Monde
- Le Pera etching
- Lead-In
- Lead-Out
- Leadbeater's cockatoo
- League of Nations
- Leaning Tower of Pisa
- Learn wisdom from the follies of others
- Leave no room for scandal
- Leaver lace
- Lebanon
- Lecanorchis japonica
- Leftovers are the best of all
- Legend of Heroes
- Leghorn
- Legion d'honneur
- Legionella pneumophila
- Legionnaire's disease
- Legionnaires' disease
- Lego
- Leibnitz daisy
- Leica
- Leipzig
- Lend me your ears a while
- Lend your money and lose your friend
- Leng Tch'e
- Lenin
- Leninism
- Leninizm
- Lent
- Lenz's law
- Leo
- Leonids
- Leontopodium japonicum
- Lepcha
- Lepidoptera
- Lepisorus thunbergiana
- Leporidae
- Leporids
- Lepus
- Lepus brachyurus lyoni
- Lesch-Nyhan syndrome
- Lesotho
- Lespedeza
- Lespedeza buergeri
- Lesser Magellanic Cloud
- Lesson one
- Let a hundred schools of thought contend
- Let bygones be bygones
- Let me see
- Let nature take its course
- Let sleeping dogs lie
- Lethenteron
- Lethocerus deyrollei
- Leucothoe grayana
- Levis
- Levite
- Leviticus
- Lewis acids & bases
- Lexin
- Leyden jar
- Lhasa
- Li
- Lian Shan
- Liang Dynasty
- Liberal Democratic Party
- Liberal Democratic Party and Komeito
- Liberal League
- Liberal Party
- Liberal Party of Canada
- Liberia
- Libra
- Library of Congress
- Libya
- Libyan wildcat
- Lidth's jay
- Liebig condenser
- Life
- Life and death are the two faces of the same coin
- Life is an unknown course
- Life is difficult
- Life is not easy
- Life is short
- Lifestyles Of Health And Sustainability
- Lightly comes
- Lights are usually followed by shadows
- Ligustrum japonicum
- Like Christmas and a birthday feast rolled into one
- Like father
- Likud
- Liliaceae
- Lilium
- Lily of the valley bush
- Lima
- Limbaugh's damselfish
- Limburger
- LimeWire
- Lindera umbrellata
- Lingchi
- Linnaean nomenclature
- Linotronic
- Linton
- Linux
- Lions Club
- Liquid Paper
- Liquidambar
- Lisbon
- Lissajous's figure
- Listen!
- Listeria monocytogenes
- Lithospermum erythrorhizon
- Lithuania
- Lithuanian
- Litigation Department
- Litsea coreana
- Litsea cubeba
- Little Black Sambo
- Little League
- Little Rock
- Little Tokyo
- Little's disease
- Live Long!
- Live web
- Livelihood Protection Law
- Liverpool Sound
- Lobelia sessilifolia
- Local Autonomy Law
- Local Government Finance Act
- Local Public Enterprise Act
- Local Tax Law
- LocalTalk
- Lockheed
- Lockheed P-3 Orion
- Lodi Dynasty
- Logos
- Lohan
- Lojban
- Lolita complex
- Lombard rate
- Lombardy poplar
- London
- Long Island
- Longbeach
- Longines
- Longitudinal Redundancy Check
- Lonicera sempervirens
- Look at both sides of the thing
- Look for a big tree when you want shelter
- Look who's talking.
- Look@Me
- Loosely-Coupled MultiProcessor
- Loramet
- Lord
- Lord Chancellor
- Lord Howe Island butterflyfish
- Lord Keeper of the Privy Seal
- Lord Privy Seal
- Lord have mercy on me
- Lord of Heaven
- Lord of Sendai
- Lord of hosts
- Lord's Supper
- Lord's will
- Lords
- Lorelei
- Lorentz contraction
- Lorentz force
- Lorentz transformation
- Lorenz attractor
- Lorenz curve
- Los Angeles
- Los Angeles police department
- Lose a fly to catch a trout
- Losers are always in the wrong
- Lost Generation
- Lotteria
- Lotus Sutra
- Louis Vuitton
- Louisiade tree monitor
- Louisiana
- Louvre
- Love is without reason
- Love makes men equal
- Low Frequency Oscillator
- Low-density lipoprotein
- Loxodon
- Ltd.
- Lubbock's chromis
- Lucent
- Lucifer
- Ludwigia stipulacea
- Lugol's solution
- Lukasiewicz notation
- Lunar New Year
- Lunella coreensis
- Lupus
- Lushan Conference
- Lutheran Church
- Lutheranism
- Luvaridae
- Luvarus
- Luvian
- Luwian
- Luxembourg
- Luxemburg
- Luzula capitata
- Ly Dynasty of Vietnam
- Lychnis coronata
- Lychnis ssp.
- Lycoris traubii
- Lycos
- Lyme disease
- Lynx
- Lyophyllum shimeji
- Lyra
- Lysenkoism
- Lysimachia fortunei
- Lythrum anceps
- M [エム]
- M size
- M-theory
- MA
- MAC
- MAC Protocol
- MAFF
- MAN
- MAO
- MAO inhibitor
- MAOI
- MAPI
- MAU
- MB
- MBA
- MBE
- MBE [エムビーイー]
- MBO
- MBONE
- MBR
- MCI
- MCR
- MCS
- MCU
- MD
- MD [エムディー]
- MDB
- MDF
- MDR
- MDRA
- ME
- MEMMAKER
- MESSAGE TRANSFER
- META tag
- METI
- METI [メティ]
- MEXT
- MFLOPS
- MFM recording
- MFN
- MH
- MHS
- MHz
- MIC
- MICR
- MIDI
- MIDI [ミディ;ミディー]
- MIDI communication
- MIFES
- MIG
- MILNET
- MIME
- MIME [マイム]
- MIP mapping
- MIPMAP
- MIPS
- MIS
- MIS [ミス;エムアイエス]
- MISAM
- MITI
- MLS
- MME
- MMF
- MMI
- MMIF
- MMO
- MMR vaccine
- MMRワクチン [エムエムアールワクチン]
- MMU
- MMX
- MN blood type
- MND
- MNP
- MNP [エムエヌピー]
- MN式血液型 [エムエヌしきけつえきがた]
- MO
- MODチップ [モッドチップ]
- MOLAP
- MOS
- MOU
- MOX
- MOX fuel
- MOX燃料 [モックスねんりょう]
- MP
- MP3
- MP3 [エムピースリー]
- MP3 player
- MP3プレーヤー [エムピースリープレーヤー]
- MPA
- MPC
- MPEG
- MPEG++
- MPEG2
- MPP
- MPS
- MPU
- MRA
- MRF
- MRI
- MRI [エムアールアイ]
- MRI scanner
- MROM
- MRP
- MRSA
- MRSA [エムアールエスエー]
- MS
- MS-DOS
- MSB
- MSCDEX
- MSCS
- MSD
- MSDN
- MSG
- MSIE
- MSN
- MSRP
- MSS
- MSW
- MT
- MTA
- MTBF
- MTN
- MTPR
- MTR
- MTR [エムティーアール]
- MTS
- MTTR
- MTU
- MUD
- MVNO
- MVP
- MVS
- MVTR
- Ma Gu
- Maasai
- Maastricht Treaty
- Mac
- Macadam
- Macao
- Macau
- Macedonia
- Mach
- Mach number
- Machaerina rubiginosa
- Machiavellianism
- Machiavellism
- Machilus thunbergii
- Machimura Faction
- Machine Translation Research Group
- Macintosh
- Macintosh version
- Mackenzie's water hemlock
- Mactra chinensis
- Madagascar butterflyfish
- Madagascar periwinkle
- Madam
- Madame
- Madeira
- Madeira wine
- Madokai's cuttlefish
- Madras
- Madras check
- Mafutsu no Kagami
- Magadaava
- Magellan
- Magellan Passport
- Magellanic Clouds
- Magellanic penguin
- Magen David
- Magna Carta
- Magnetic Character Reader
- Magnetic Ink Character Reader
- Magneto-Optical disk
- Magnolia denudata
- Magnolia grandiflora
- Magnolia kobus
- Magnolia praecocissima
- Magnoliaceae
- Mah Jong tile
- Mah Jong tiles
- Mahakala
- Mahamayuri
- Mahasamghika
- Mahasthamaprapta
- Mahatma
- Mahavairocana
- Mahavairocana Sutra
- Mahayana Buddhism
- Mahayana Mahaparinirvana Sutra
- Mahesvara
- Mahito
- Mahonia japonica
- Mahratta
- Maianthemum japonicum
- Maiasaura
- Main Division Frame
- Maine shrimp
- Mainichi Newspapers Co. Ltd
- Mainland China
- Maitreya
- Major
- Major League
- Major Mitchell's cockatoo
- Make assurance double sure
- Make hay while the sun shines
- Maker
- Makuya
- Malachi
- Malaga
- Malawi
- Malawi butterfly
- Malay
- Malayalam language
- Malayan banyan
- Malayan chromis
- Malayan sun bear
- Malayan tapir
- Malayo-Polynesian
- Malaysia
- Maldive
- Maldives
- Mali
- Malibu
- Mallotus japonicus
- Malpighian corpuscle
- Malpighian tubule
- Malta
- Malta fever
- Maltese
- Malthusianism
- Malus halliana
- Malvales
- Mama
- Mamluk Dynasty
- Man does what man can do then awaits the verdict of heaven or fate
- Man is made of flesh and blood
- Man is the lord of creation
- Man of the Year
- Man proposes
- Man shall not live by bread alone
- Man turns to God only in his trouble
- Man'en era
- Man's life vanishes like a dew
- Man'yougana written in kaisho or gyousho style
- Managed object
- Management Conference
- Management Domain
- Management Information Base
- Management Information System
- Manchester
- Manchu
- Manchu Dynasty
- Manchu people
- Manchu person
- Manchukuo
- Manchukuo dialect
- Manchuria
- Manchuria and Mongolia
- Manchurian
- Manchurian elm
- Manchurian walnut
- Manchurian wild rice
- Mandala of the Two Realms
- Mandarin
- Mandarin Chinese
- Mandarin collar
- Mandelbrot set
- Mangyongbong-92