;
- Manhattan
- Manhattan Project
- Mani wheel
- Manichaeism
- Manicheanism
- Manifest Destiny
- Manila
- Manila clam
- Manila hemp
- Manitoba
- Manji era
- Manju era
- Manjusri
- Mannekin Pis
- Manta birostris
- Mantoux test
- Mantra of Light
- Manx cat
- Many a little makes a mickle
- Manyoushuu
- Maomao
- Maori
- Maori wrasse
- Maratha
- Maratha Confederacy
- Marburg disease
- Marburg hemorrhagic fever
- Marburg school
- Marburg virus
- Marcella butterflyfish
- March
- March 3rd
- March 3rd of the lunar calendar
- March Revolution
- Marco Polo Bridge
- Marco Polo Bridge Incident
- Marek's disease
- Marfan syndrome
- Marfan's syndrome
- Margaritifera laevis
- Marianas
- Marici
- Maries' fir
- Marine
- Marine Accidents Inquiry Agency
- Marine Corps
- Marine Day
- Marine Expeditionary Force
- Mariology
- Marisat
- Maritime Self Defense Forces
- Maritime Self-Defense Force
- Maritime Traffic Safety Act
- Marketing Information System
- Markov analysis
- Markov chain
- Markov chain Monte Carlo methods
- Markov model
- Markov process
- Markov transition
- Marley's Butterflyfish
- Marmite
- Marphysa sanguinea
- Marquesas butterflyfish
- Mars
- Marshall Plan
- Marshallian k
- Marten's pearl oyster
- Martian
- Martian year
- Martinique
- Maru-ship
- Marukan font
- Maruyama vaccine
- Marxian economics
- Marxism
- Marxism-Leninism
- Marxist
- Marxist aesthetics
- Marxist feminism
- Mary
- Mary Celeste
- Mary Magdalene
- Mary River turtle
- Maryland
- Masai
- Maserati
- Mass Storage System
- Massachusetts
- Massacre of the Innocents
- Masscomp
- Master of Arts
- Master of Business Administration
- Master of Engineering
- Master of Science
- Masters Golf Tournament
- Matajirou shaku
- Material Requirement Planning
- Mathematical Programming System
- Mathematics and Japanese
- Matsubara's red rockfish
- Matsumae pickles
- Matsumoto sarin gas attack
- Matsuo Basho remembrance day
- Matsusaka beef
- Matsushita Electric Industrial
- Matsushita Electric Works
- Matsuya
- Matter and mind are one
- Matteuccia struthiopteris
- Maule's quince
- Mauritania
- Mauritian gregory
- Mauritius
- Maurya Dynasty
- Mauser
- Mauser rifle
- Maxwell's demon
- Maxwell's equations
- May
- May Day
- May Festival
- May Queen
- May apple
- May-December romance
- Maya
- Mayday
- Mayotte
- Mayuri Vidya-raja
- McCarthyism
- McCulloch
- McDonald's
- McJob
- Mecca
- Mecopoda nipponensis
- Mecoptera
- Medal with Blue Ribbon
- Medal with Dark Blue Ribbon
- Medal with Green Ribbon
- Medal with Purple Ribbon
- Medal with Red Ribbon
- Medal with Yellow Ribbon
- Media Access Control
- Media Access Control Protocol
- Media Access Control sublayer
- Media Laboratory
- Median Tectonic Line
- Medicaid
- Medical Service Law
- Mediterranean Sea
- Mediterranean chromis
- Mediterranean climate
- Mediterranean fruit fly
- Mediterranean mussel
- Mediterranean race
- Medoc
- Medusa
- Mega
- Mega Drive
- Megachasma
- Megachasmidae
- Megarian school
- Meiji 27-28 Campaign
- Meiji Constitution
- Meiji Restoration
- Meiji Shrine
- Meiji era
- Meiji period
- Meiji period women's hairstyle
- Meimuna opalifera
- Mein Kampf
- Meiou era
- Meireki era
- Meishin Expressway
- Meissen porcelain
- Meistersinger
- Meitoku era
- Meiwa era
- Mekong delta
- Melanesian
- Melastoma candidum
- Melastomataceae
- Melba toast
- Melbourne
- Meliosma myriantha
- Meliosma rigida
- Meliphagidae
- Meloe coarctatus
- Melon butterflyfish
- Memorial Day
- Memory Management Unit
- Memphis
- Men of genius tend to be of delicate health
- Men seldom live to be seventy
- Mencius
- Mendel's laws
- Mendelian population
- Mendelism
- Mendocino
- Meniere
- Meniere's disease
- Menispermaceae
- Mennonite
- Menshevik
- Mentha japonica
- Mercator's projection
- Merced
- Mercedes
- Mercedes-Benz
- Mercenaria stimpsoni
- Mercosur
- Mercurochrome
- Mercury
- Meredith's angelfish
- Merino
- Meristotheca papulosa
- Merlot
- Merry Christmas
- Merten's butterflyfish
- Mertens' water monitor
- Mesolithic age
- Mesopotamia
- Mesopotamian civilization
- Mesozoic era
- Message Handling
- Message Handling System
- Message Store
- Message Transfer
- Message Transfer Agent
- Message Transfer System
- Messiah
- Messrs
- Metagonimus yokogawai
- Metal Age
- Metal Oxide Semiconductor
- Metal Slug
- Metaplexis japonica
- Meteorological Agency
- Methodist
- Methodist Church
- Metis
- Metropolitan Area Network
- Metropolitan Electric Railway
- Metropolitan Police Department
- Metropolitan assemblyman
- Mexican
- Mexican Revolution
- Mexican bamboo
- Mexican bonito
- Mexican fireplant
- Mexican hogfish
- Mexican hornshark
- Mexican lamprey
- Mexican prickly poppy
- Mexican walking fish
- Mexican-American War
- Mexico
- Meyer's butterflyfish
- MiG [ミグ]
- Miami
- Miao
- Micadina phluctaenoides
- Micah
- Michelia compressa
- Michelin
- Michelson-Morley experiment
- Michigan
- Michinoshi
- Mickle fails that fools think
- Micro Channel
- Micro Dry
- Microcom
- Micron
- Micronesia
- Micronesians
- Microsoft
- Microsoft Points
- Microsoft PowerPoint
- Microsoft Product Activation
- Mid-west
- Middendorf's whelk
- Middle Ages
- Middle East
- Middle East countries
- Middle English
- Middle Stone Age
- Midsummer
- Mie prefecture
- Mig
- Mikkyou
- Mila Sohon
- Military Academy
- Military Staff College
- Milk Dipper
- Milky Hat
- Milky Way
- Millenium
- Milwaukee
- Mimela splendens
- Min Nan
- Minamata disease
- Minarchism
- Mincho
- Mind your own business
- Minerva
- Ming
- Ming & Xing-era Chinese music
- Ming Dynasty
- Ming Dynasty love story
- Ming dinasty
- Ming-cho type
- Ming-era Chinese music
- Ming-style typeface
- Minimum Wages Act
- Minister for Culture and Tourism
- Minister for Economics and Finance
- Minister for Foreign Affairs
- Minister for the Environment
- Minister of Agriculture
- Minister of Civil Administration and Social Welfare
- Minister of Construction
- Minister of Defence
- Minister of Defense
- Minister of Economy
- Minister of Education
- Minister of Finance
- Minister of Health
- Minister of Health and Welfare
- Minister of Home Affairs
- Minister of Internal Affairs and Communications
- Minister of International Trade and Industry
- Minister of Justice
- Minister of Labor
- Minister of Labour
- Minister of Land
- Minister of Posts and Telecommunications
- Minister of Rites
- Minister of State
- Minister of Transport
- Minister of War
- Minister of Works
- Minister of the Interior
- Minister of the Left
- Minister of the Navy
- Minister of the Right
- Ministry Agriculture
- Ministry of Agriculture
- Ministry of Agriculture and Commerce
- Ministry of Central Affairs
- Ministry of Civil Administration
- Ministry of Civil Administration and Social Welfare
- Ministry of Communications and Transportation
- Ministry of Construction
- Ministry of Culture
- Ministry of Defence
- Ministry of Defense
- Ministry of Divinities
- Ministry of Economy
- Ministry of Education
- Ministry of Finance
- Ministry of Foreign Affairs
- Ministry of Health
- Ministry of Health and Welfare
- Ministry of Home Affairs
- Ministry of Internal Affairs and Communications
- Ministry of International Trade and Industry
- Ministry of Justice
- Ministry of Labour
- Ministry of Land
- Ministry of Personnel
- Ministry of Popular Affairs
- Ministry of Posts and Telecommunications
- Ministry of Religious Education
- Ministry of Revenue
- Ministry of Rites
- Ministry of State
- Ministry of Transport
- Ministry of War
- Ministry of Works
- Ministry of the Environment
- Miniture Card
- Minkowski space-time
- Minnesota
- Mino paper
- Minor Offenses Act
- Minos
- Miocene epoch
- Miquel's mazus
- Mir
- Mirabilis jalapa
- Mishima cattle
- Misogi-kyo
- Miss
- Miss or Ms
- Missouri
- Mister
- Mister Donut
- Misumenops tricuspidatus
- Mitake-kyo
- Mitchell's water monitor
- Mitella stylosa
- Mithraism
- Mitochondrial Eve
- Mitsubishi
- Mitsubishi Corporation
- Mitsubishi Electric
- Mitsubishi Zaibatsu
- Mitsui
- Mitsui Sumitomo
- Mitsui Zaibatsu
- Mitsukoshi
- Mitsukurina
- Mitsukurinidae
- Mitzvah
- Miura map fold
- Miwa Shinto
- Mixi
- Miyabe charr
- Miyagi prefecture
- Miyako toad
- Miyama cherry
- Miyama stag beetle
- Miyamayomena savateri
- Miyazaki prefecture
- Mizuho Bank
- Mobile Gear
- Mobula japanica
- Moby Dick
- Moderation is its own medicine
- Moebius
- Moebius strip
- Moessbauer effect
- Mohammadanism
- Mohawk
- Mohawk haircut
- Mohe
- Moho
- Mohorovicic discontinuity
- Moirai
- Moldavia
- Moldova
- Molotov cocktail
- Moluccan black-backed monitor
- Moluccan cockatoo
- Momoyama period
- Mon-Khmer
- Mon-Wed-Fri
- Mona Lisa
- Monaco
- Monday
- Monday and Tuesday
- Mondays and Fridays
- Mondex
- Monel
- Monel metal
- Monema flavescens
- Monera
- Money begets money
- Money gone
- Money is round and rolls away
- Money is the best lawyer
- Money rules the world
- Money talks
- Mongol Dynasty
- Mongol Empire
- Mongolia
- Mongolian
- Mongolian gerbil
- Mongolian jird
- Mongolian lark
- Mongolian oak
- Mongolian spot
- Mongolic
- Mongoloid
- Monkey
- Monkey Fist
- Monkey-Style kung-fu
- Monoceros
- Monochoria korsakowii
- Monodontidae
- Monomorium intrudens
- Monopoly Bureau
- Monotropastrum humile
- Monroe Doctrine
- Monroe effect
- Monroeism
- Monrovia doctorfish
- Mont Blanc
- Montana
- Monte Carlo
- Monte Carlo method
- Monteverdi
- Montgomery
- Montoku Jitsuroku
- Montreal Protocol
- Montserrat
- Moon
- Moon God
- Moor
- Moore's Law
- Moraceae
- Moral Rearmament
- Mormonism
- Moroccan Crisis
- Morocco
- Morquio's disease
- Morquio's syndrome
- Morris
- Morris dance
- Morse code
- Mortonagrion hirosei
- Mosaic View
- Moscow
- Moscow Mule
- Moses
- Mosla punctulata
- Moslem
- Mossad
- Mother
- Mother Earth
- Mother Goose
- Mother Nature
- Mother's Day
- Mothers
- Motion Picture Code of Ethics Committee
- Motorola
- Mount
- Mount Kosciusko
- Mount Penglai
- Mountain School
- Mountain Time
- Moxifloxacin
- Mozambique
- Mozambique tilapia
- Mozart
- Mozilla
- Mozilla community
- Mr
- Mr So-and-so
- Mr Tarou
- Mr.
- Mr. Children
- Mrs
- Mrs or Ms
- Mrs.
- Ms
- Mt
- Mt Fuji
- Mt Sumeru
- Mt Taishan
- Mt. Fuji
- Mt. Hiei
- Mt. Koya missionary
- Muay Thai
- Muenchen
- Mughal Empire
- Muhammadanism
- Muller
- Muller's coralfish
- MultiFinder
- Multics
- Multikey Indexed Sequential Access Method
- Multipurpose Internet Mail Extension
- Multum In Parvo mapping
- Mum's the word
- Munchausen's syndrome
- Munda languages
- Munich
- Munich Agreement
- Munich Conference
- Munich Pact
- Munich Putsch
- Munsell color system
- Munshingwear
- Muppet
- Muraji
- Murakami Fund
- Murakumo no Tsurugi
- Murasame class destroyer
- Murder will out
- Muromachi
- Muromachi period
- Muromachi shogunate
- Muromachi-period texts or annotations of texts used in Zen lectures
- Murphy's Law
- Muse
- Music Department
- Muslim
- Muslim believer
- Muslim holy war against unbelievers
- Muslim legal expert entitled to make decisions on points of Islamic law
- Muslim martyr
- Muso Jikiden Eishin-ryu
- Mussolini
- Must I?
- Mustelidae
- Mustelids
- Mustelus
- My Device
- My Documents
- My Lady
- My Lai Massacre
- My Lord
- My TV
- My Videos
- My goal is still a long way off
- My goodness
- Mya arenaria oonogai
- Myanmar
- Mycobacterium leprae
- Myersina filifer
- Myoken
- Myomorpha
- Myricaceae
- Myrmarachne japonica
- Myrtales
- Mytalk
- Myxine
- Myxine paucidens
- Myxinidae
- Möbius strip
- Müller's coralfish
- M字開脚 [エムじかいきゃく]
- M理論 [エムりろん]
- M走 [メートルそう]
- N
- N-man team
- N;n [エヌ]
- NAD [エヌエーディー;ナッド]
- NAFTA
- NAK
- NAK [ナック]
- NAL
- NAND
- NAND circuit
- NAND element
- NAND gate
- NAND operation
- NAP
- NAPLPS
- NAPS
- NAPS [ナプス]
- NASA
- NASA [ナサ]
- NASA fashion
- NASD
- NASDA
- NASDAQ
- NASDAQ [ナスダック]
- NASTAR ski
- NATO
- NATO [ナトー]
- NB
- NC
- NCA
- NCR
- NCSA
- NCTV
- NCU
- NDA
- NDC
- NDGA
- NDM-1
- NDP
- NDV
- NDフィルタ [エヌディーフィルター]
- NEC
- NEET
- NEET [ニート]
- NEIPT
- NEITHER-NOR operation
- NETWORLD+INTEROP
- NFER
- NFL
- NFP
- NFS
- NFSNET
- NG
- NG [エヌジー;エヌジ]
- NGO
- NHI drug price
- NHK
- NHK Educational TV
- NHK Symphony Orchestra
- NHK [エヌエッチケー]
- NHK fees
- NHK受信料 [エヌエッチケーじゅしんりょう]
- NHK教育テレビ;エヌエッチケー教育テレビ [エヌエッチケーきょういくテレビ]
- NHK教育テレビジョン;エヌエッチケー教育テレビジョン [エヌエッチケーきょういくテレビジョン]
- NHS service
- NIC
- NICOLA
- NIFTY-serve
- NIHS
- NII
- NIM
- NIMBY
- NIMBY [ニンビー]
- NIMDA
- NISA
- NISO
- NIST
- NLE
- NLP
- NMD
- NMF
- NMI
- NMR
- NMR [エヌエムアール]
- NMRI
- NNP
- NNTP
- NNW
- NOAA
- NOC
- NOR
- NOR element
- NOR gate
- NOR operation
- NOS
- NOT
- NOT circuit
- NOT element
- NOT gate
- NOT operation
- NOT-BOTH operation
- NOT-IF-THEN element
- NOT-IF-THEN gate
- NOT-IF-THEN operation
- NOTAM
- NOx
- NOx [エヌオーエックス;ノックス]
- NP
- NPC
- NPF
- NPO
- NPO [エヌピーオー]
- NPO法 [エヌピーオーほう]
- NPO法人 [エヌピーオーほうじん]
- NPS
- NPS [エヌピーエス]
- NPT
- NPTN
- NRC
- NRC [エヌアールシー]
- NREN
- NRZ
- NRZ-0
- NRZ-1
- NS
- NS magnetic pole
- NSAID
- NSAPI
- NSF
- NSFnet
- NSP
- NSPIXP
- NTB
- NTP
- NTT
- NTT Directory
- NTT [エヌティーティー]
- NTT permission-to-procure-a-phone-line
- NTT's unmetered telephone service
- NULLPO [ぬるぽ;ヌルポ;なるぽ;ナルポ]
- NYSE
- NaK
- NaK [ナック;ナク]
- NaN
- NaN [ナン;エヌエーエヌ]
- Nabeshima porcelains
- Nabeshima ware
- Nagano and Niigata
- Nagano prefecture
- Nagasaki
- Nagasaki dish of noodles with various toppings
- Nagasaki prefecture
- Nagata-chou
- Nagatanien
- Nagoya
- Nagoya and environs
- Nagoya sumo tournament
- Nagoya to protect the officials there
- Nahuatl
- Nahum
- Naiad
- Naikan therapy
- Nakagami
- Nakasendo
- Nalta jute
- Namamugi Incident
- Names and natures do often agree
- Namibia
- Nanban trade
- Nandikesvara
- Nandina domestica
- Naniwa
- Naniwa Bay
- Nanjing
- Nanking
- Nanking Incident
- Nanking Massacre
- Nanking cherry
- Nanking porcelain
- Nansei-shoto
- Napa Valley
- Naphthalin
- Naples
- Napoleon
- Napoleon wrasse
- Napoleonfish
- Napoleonic code
- Nara period
- Nara prefecture
- Narcissus
- Narcissus tazetta var chinensis
- Narcotics Control Law
- Narcotics and Psychotropics Control Law
- Narita divorce
- Nasdaq Japan
- Nash equilibrium
- Nashville
- Naso
- Nasolamia
- Natal sergeant
- Natal toby
- Naticidae
- National Aeronautics and Space Administration
- National Aerospace Laboratory
- National Association of Securities Dealers
- National Association of Securities Dealers Automated Quotations
- National Astronomical Observatory of Japan
- National Athletic Meet
- National Bar Examination Administration Commission
- National Cancer Center
- National Center Test for University Admissions
- National Center of Trade Unions
- National Civil Service Law
- National Critical Technology
- National Defense Council
- National Defense Program Outline
- National Dentistry Examination
- National Diet
- National Diet Library
- National Examination for Information Processing Technicians
- National Football League
- National Foundation Day
- National Government Organization Law
- National Guard
- National Guard member
- National Health Insurance drug price
- National Information Infrastructure
- National Institute for Japanese Language
- National Institute of Health
- National Institute of Health Sciences
- National Invitational High-School Baseball Tournament
- National Land Agency
- National League
- National Medical Practitioners Qualifying Examination
- National Military Establishment
- National Mobilization Law
- National Personnel Authority
- National Police Agency
- National Public Safety Commission
- National Public Safety Commission Chairman
- National Railway Motive Power Union
- National Railway Workers Union
- National Requisition Ordinance
- National Research Council
- National Safety Week
- National School Establishment Law
- National Science Foundation
- National Security Council
- National Space Development Agency
- National Standard Race ski
- National Tax Agency
- National Theater
- National Trade Skills Test
- National Trust
- National day
- National museum of Japanese history
- Nationalist Government
- Nationalsozialist
- Natural Conservation Law
- Nature itself is a good mother
- Naude's rubble goby
- Naumann elephant
- Navaho
- Navajo
- Naval Battle off Malaya
- Naval General Staff
- Navi Dial
- Navigation Acts
- Navstar
- Navy Minister
- Nazarene
- Nazi
- Nazi Party
- Nazism
- NeXT
- NeXTSTEP
- Neanderthal
- Neanderthal man
- Neapolitan
- Neapolitan coffee
- Near East
- Near and Middle East
- Nearctic
- Nebraska
- Nebrius
- Nebuta Festival
- Necessity is the mother of invention
- Necessity knows no law
- Negaprion
- Negative AND operation
- Negative OR operation
- Negoro lacquerware
- Negrillo
- Negrito
- Negro spiritual
- Negroid
- Nehemiah
- Nelson
- Nematic liquid crystal
- Nematoda
- Neo-Nazi
- Neoglyphidodon
- Neoharriotta
- Neomysis awatschensis
- Neomysis intermedia
- Neorever
- Neotrigonia
- Neotropical
- Neotropics
- Nepal
- Nepal holly
- Nephila clavata
- Neptune
- Nerium oleander var. indicum
- Nesbit River monitor
- Nescafe
- Nessie
- Nestle
- Nestorian
- Nestorian sect
- Nestorianism
- Net citizen
- Net2Phone
- Net8
- NetBEUI
- NetBIOS
- NetBSD
- NetOLTP
- NetPhone
- NetWare
- Netfind
- Netherlands Guiana
- Netscape
- Netscape Communications Crop.
- Netscape Communicator
- Netscape Navigator
- Network Address Translation
- Network Control Unit
- Network File System
- Neuman architecture
- Neumann
- Neumann-type
- Neuroptera
- Neurospora crassa
- Nevada
- Never give up!
- Never happen
- Never mind
- Never mind!
- Never too late to learn
- New Ainu Law
- New Brunswick
- New Clean Government Party
- New Conservative Party
- New Deal
- New Delhi metallo-beta-lactamase
- New Economy
- New Frontier Party
- New Guinea
- New Hampshire
- New Jersey
- New Komeito
- New Korea Party
- New Mexico
- New Party Big Earth
- New Party Daichi
- New Party Nippon
- New Party Sakigake
- New Right
- New South Wales
- New Testament
- New Wave
- New World hookworm
- New World monkey
- New Year
- New Year clothing
- New Year courtesy calls
- New Year dish
- New Year event to pray for a rich rice harvest
- New Year firefighters' event
- New Year food for entertaining a guest served in multilayered lacquered boxes
- New Year greeting
- New Year greetings
- New Year issue
- New Year tea
- New Year's Day
- New Year's Day sunrise
- New Year's Eve
- New Year's Week
- New Year's banquet
- New Year's call
- New Year's calls
- New Year's card
- New Year's clothes
- New Year's decoration with cocoon-shaped cakes
- New Year's feast
- New Year's gift
- New Year's greetings
- New Year's greetings or well-wishes offered by retainers to the Emperor
- New Year's mail
- New Year's morning
- New Year's party
- New Year's period
- New Year's pine decoration
- New Year's pine decorations
- New Year's postcard
- New Year's resolution
- New Year's ritual at Izumo Shrine
- New Year's sake
- New Year's sumo tournament
- New Year's symbolic pine decoration
- New Year's visit to a shrine or temple which lies in a favorable or lucky direction
- New Years greetings
- New York
- New York State
- New York Stock Exchange
- New Zealand
- New Zealand and the United States
- New Zealand catshark
- New Zealand grayling
- NewCOARA
- Newbridge
- Newcastle
- Newcastle disease virus
- Newfoundland
- NewsAgent
- NewsStand Inc.
- NewsWatcher
- Newsweek
- Newton
- Newton's rings
- Newtonian mechanics
- Newtonian telescope
- NexGen
- Nguyen Dynasty
- NiCad battery
- Niagara
- Nibe croaker
- Nicaragua
- Nice one
- Nicene Creed
- Nichinan coastline
- Nichiren Shoshu
- Nichiren chant
- Nichiren school of Buddhism
- Nichiren sect
- Nichiren sect of Buddhism
- Nicholas
- Nichrome
- Nickel-Metal Hydride battery
- Nicol prism
- Nietzsche's "ewige Wiederkunft"
- Niftyserve
- Niger-Congo
- Niger-Kordofan
- Nigeria
- Nigerian fraud
- Nihon Housou Kyoukai
- Nihon Kiin
- Nihon Kouki
- Nihon Montoku Tenno Jitsuroku
- Nihon Plain
- Nihon Sandai Jitsuroku
- Nihon Sumo Kyokai
- Nihon-shoki
- Niigata
- Niigata Minamata disease
- Niigata prefecture
- Nikaya Buddhism
- Nike Hercules
- Nikkei
- Nikkei 225 futures
- Nikkei 225 option
- Nikkei Mix Information eXchange
- Nikkei Stock Average
- Nile
- Nile crocodile
- Nile green
- Nile monitor
- Nile perch
- Nile tilapia
- Nimby
- Nimpei era
- Nin'an era
- Nina Ricci
- Ninja art of camouflage
- Ninja art of escape
- Ninja clan master
- Ninja commander
- Ninja script
- Ninja spitting needles
- Ninja sword
- Ninja throwing knives
- Ninja weighted chain weapon
- Ninji era
- Ninju era
- Ninna era
- Nintendo
- Nintendo 64
- Nippon Decimal Classification
- Nippon Decimal System
- Nippon Keidanren
- Nippon Steel Corporation
- Nippon Telegraph and Telephone Corporation
- Nippon Telegraph and Telephone Public Corporation
- Nipponocypris sieboldii
- Nippou Main Line
- Nirvana
- Nirvana Sutra
- Nirvana principle
- Nishida's philosophy
- Nishijin brocade
- Nishijin silk fabrics
- Nissan
- Nissan Motor
- Nitidotellina nitidula
- Nitten Exhibition
- Nivkh
- Niwaella delicata
- Nixon shock
- Nkhomo-benga peacock
- NlightN
- No
- No Admittance
- No Entry!
- No Hunting!
- No Parking
- No Right Turn!
- No Smoking!
- No Thoroughfare
- No Through Road
- No Trespassing
- No Unauthorized Entry
- No Unauthorized Persons
- No Vacancy
- No Visitors
- No cross
- No flying from fate
- No heat or cold lasts over the equinox
- No man can resist the lure of a woman
- No mortal escapes death
- No news is good news
- No one knows what the future holds
- No parking
- No smoking
- No way!
- No!
- No. 1 type
- No. 18
- Noah's ark
- Nobel
- Nobel Prize in Chemistry
- Nobel Prize in Economics
- Nobel Prize in Literature
- Nobel Prize in Physics
- Nobel Prize in Physiology or Medicine
- Nobel laureate
- Nobel peace prize
- Nobel prize
- Nobel-Prize winner
- Noble Eightfold Path
- Nobody can struggle against advancing age
- Nobody knows the morrow
- Noh play
- Noise Abatement Act
- Nomonhan Incident
- Nomura's jellyfish
- Non-Maskable Interrupt
- Nonconformist
- Nondenominationalism
- None of your business!
- Nonsense
- Noraism
- Nordic
- Nordic combined
- Nordic event
- Nordic race
- Nordic skiing
- Norfolk jacket
- Norman
- Norman Conquest
- Normandy
- Normandy Invasion
- Noronha wrasse
- Norse
- Norse mythology
- Norsemen
- North America
- North American Free Trade Agreement
- North American continent
- North Atlantic
- North Atlantic Treaty
- North Atlantic Treaty Organization
- North Atlantic right whale
- North Bridge
- North Carolina
- North China
- North China Incident
- North China barbarian nations
- North Dakota
- North Korea
- North Korean ballistic missile
- North Korean defectors
- North Korean person
- North Manchuria
- North Pacific bluefish
- North Pacific giant octopus
- North Pacific right whale
- North Pacific squirrelfish
- North Pole
- North Sea
- North Sea oil
- North Sea oil fields
- North-South problem
- North-Star
- Northeast Passage
- Northeastener
- Northern Aulonocara
- Northern Buddhism
- Northern California
- Northern Dynasty
- Northern Europe
- Northern European
- Northern Ireland
- Northern Qi
- Northern Song
- Northern Telecom
- Northern Wei
- Northern and Southern Dynasties
- Northern sea lion
- Northwest
- Northwest Passage
- Northwest Territories
- Northwood
- Norton
- Norton Utilities
- Norway
- Norway rat
- Norwegian
- Nosema bombycis
- Not a Number
- Not a word to anyone
- Not for sale
- Not to be taken out
- Not worth pursuing those who run away
- Not-for-Profit Organization
- Notes
- NotesPump
- Nothing comes of nothing
- Nothing costs as much as what is given to us
- Nothing venture
- Notonecta triguttata
- Notorynchus
- Nova Scotia
- Novell
- November
- Now is the time
- Now let's return to the main subject
- Now you are talking
- NuBus
- Nuclear Non-Proliferation Treaty
- Nuclear Regulatory Commission
- Nuclear Safety Commission
- Nuclear and Industrial Safety Agency
- NumLock
- Number of the Beast
- Numerical Analysis and Prediction System
- Nuremberg Trials
- Nutella
- Nuts to you!
- Nynex
- Nyorai Buddha
- Nyquist frequency
- N響 [エヌきょう]
- O
- O Control unit
- O Great God of Arms
- O my God!
- O-Bon
- O-back
- O-ring
- O;o [オー]
- OA
- OA [オーエー]
- OADG
- OAPEC
- OAS
- OASYS
- OB
- OB Van
- OB [オービー]
- OCD
- OCN
- OCR
- OCX
- ODA
- ODBC
- ODBMS
- ODIN
- ODN
- ODP
- OEM
- OEM [オーイーエム]
- OFDM
- OFF-ON
- OG [オージー]
- OH
- OJT
- OK
- OK with corrections
- OK;おk [オッケー(P);オーケー(P)]
- OK?
- OL
- OL [オーエル]
- OLAP
- OLE
- OLTP
- OMNIMAX
- OMR
- ONDCP
- OODB
- OOPArt
- OPEC
- OPENLOOK
- OPP
- OPS
- OPW
- OR
- OR element
- OR gate
- OR operation
- ORB
- ORDB
- ORIONS
- OS
- OS [オーエス]
- OS-2
- OS-2 Warp
- OSI
- OSPER
- OSPF
- OSR2
- OTC [オーティーシー]
- OTC market
- OTC trading
- OTC薬 [オーティーシーやく]
- OTR
- OV [オーブイ]
- OVA [オーブイエー]
- Obadiah
- Obaku school of Zen Buddhism
- Oban
- Obediently yours
- Obito
- Object Linking and Embedding
- Occam's razor
- Occident
- Occidental
- Occitan
- Oceania
- Ocellaris clownfish
- Ochromonas vischeri
- Ockham's razor
- Octans
- October
- October 10th Chinese national holiday
- October Revolution
- Ocypode stimpsoni
- Ode to Early Spring
- Odin
- Odontamblyopus lacepedii
- Odontaspididae
- Odontaspis
- Odontophoridae
- Odyssey
- Oedipus
- Oedipus complex
- Of all things!
- Of course it is so
- Off-Mountain School
- Office Document Language
- Office of the United Nations High Commissioner for Refugees
- Office2000
- Office95
- Office98
- OfficeXP
- Official Development Assistance
- Ogasawara-ryu
- Ogilbys ghostshark
- Ogino method
- Ogopogo
- Ogosho period
- Ogura Anthology of One Hundred Tanka by One Hundred Poets
- Oh
- Oh dear
- Oh my Great Buddha!
- Oh my god!
- Oh no
- Oh no!
- Oh well
- Oh yeah
- Oh!
- Ohio
- Ohio spiderwort
- Ohm
- Ohm's law
- Oita prefecture
- Okayama prefecture
- Okazaki fragment
- Okeydokey!
- Okhostk Atka mackerel
- Okinawa
- Okinawa Socialist Masses Party
- Okinawa chromis
- Okinawa dialect
- Okinawa flying fox
- Okinawa prefecture
- Okinawa pygmy-goby
- Okinawa rail
- Okinawa rubble goby
- Okinawa school of karate
- Okinawa woodpecker
- Okinawan dish of pig ears
- Okinawan doughnut
- Okinawan dragon boat race
- Okinawan fixed form poetry
- Okinawan fortress
- Okinawan habu
- Okinawan kobudo
- Okinawan lion statues
- Okinawan scale
- Okinawan stir-fry dish
- Okinawan sweet
- Okinawan traditional three-stringed instrument
- Okinawan yellow cucumber
- Oklahoma
- Okuni kabuki
- Okuninushi
- Old Black Joe
- Old Economy
- Old English sheepdog
- Old Parr
- Old Testament
- Old World flycatcher
- Old World hookworm
- Old World monkey
- Old World vulture
- Old and New Testaments
- Olea fragrans
- Oleaceae
- Oligocene epoch
- Olympia
- Olympiad
- Olympic Charter
- Olympic Congress
- Olympic Day
- Olympic Flag
- Olympic Flame
- Olympic Games
- Olympic Park
- Olympic Torch
- Olympic Village
- Olympic Winter Games
- Olympic athlete
- Olympic event
- Olympic flag
- Olympic flame
- Olympic record
- Olympic torch
- Olympic torch relay
- Olympic year
- Olympics
- Olympus
- Om
- Oman
- Oman butterflyfish
- Omi
- Omi beef
- Omnibus Trade and Competition Act
- Omobranchus elegans
- Omphalius pfeifferi pfeifferi
- Omphalodes japonica
- Omron Corporation
- Omuro
- On reading
- On second thoughts ...
- On-Line Analytical Processing
- Once a beggar
- Once over the border
- Once you suspect something
- Oncorhynchus nerka kawamurae
- Oncotympana maculaticollis
- One Thousand and One Nights
- One good turn deserves another
- One man's fault is another's lesson
- One man's meat is another man's poison
- One should not interfere in lover's quarrels
- One who is cornered will fight like a devil
- One's strength is his weakness
- OneWorld
- Oni
- Onin War
- Oniwaban
- Only a hero can understand a hero
- Only the husband does not know
- Onmyoudou
- Onoclea orientalis
- Onogoro Island
- Onokoro Island
- Ontake-kyo
- Ontario
- Oomoto
- Oort cloud
- Open Computer Network
- Open Document Architecture
- Open Sesame!
- Open Systems Interconnection
- Open University
- OpenClient
- OpenDoc
- Operation Code
- Operation Tomodachi
- Operations manuals
- Ophidion asiro
- Ophioplocus japonicus
- Ophiuchus
- Opium War
- Opium Wars
- OptiPlex
- Optical Channel Adapter
- Optical Mark Reader
- Optical Sensor Mouse
- Option key
- Opus Dei
- Oracle 7
- Oracle 8
- Oracle 8i
- Oracle 9i
- Oracle 9iAS
- Oracle Applications
- Oracle EBS
- Oracle iAS
- Orange Revolution
- Order of Cultural Merit
- Order of Culture
- Order of Friars Minor
- Order of Preachers
- Order of Saint Benedict
- Order of the Chrysanthemum
- Order of the Precious Crown
- Order of the Rising Sun
- Order of the Sacred Treasure
- Orders of the Precious Crown
- Orders of the Rising Sun
- Orders of the Sacred Crown
- Orders of the Sacred Treasure
- Ordinance of the Konin Era
- Ordovician period
- Orectolobidae
- Orectolobus
- Oregon
- Oregon pine
- Oreochromis
- Organization of Arab Petroleum Exporting Countries
- Organization of Petroleum Exporting Countries
- Orient
- Orient and Occident
- Orient express
- Oriental
- Oriental Studies
- Oriental art
- Oriental bezoar
- Oriental blood fluke
- Oriental butterflyfish
- Oriental country
- Oriental cuckoo
- Oriental false hawksbeard
- Oriental fire-bellied toad
- Oriental flying gurnard
- Oriental fruit fly
- Oriental garden cricket
- Oriental greenfinch
- Oriental history
- Oriental liver fluke
- Oriental longheaded locust
- Oriental medicine
- Oriental paper bush
- Oriental photinia
- Oriental rug
- Oriental stork
- Oriental turtle dove
- Orientalism
- Orientalist
- Orientals
- Origin of Species
- Orion
- Orion Nebula
- Orlon
- Ornithischia
- Orthodox Church
- Orthoptera
- Oryzanin
- Osaka
- Osaka Conference
- Osaka High Court
- Osaka Incident
- Osaka Securities Exchange
- Osaka city
- Osaka dialect
- Osaka sumo tournament
- Osaka-Kobe
- Osaka-fu
- Oscar
- Oshima cherry
- Oshima tsumugi weave
- Osmanthus fragrans
- Ostrich fern
- Ostrogoth
- Ostwald color system
- Osumi class vehicle transport ship
- Oswego tea
- Otani sect
- Otani sect of Shinshu
- Otenmon conspiracy
- Othello
- Otowaya
- Ottawa
- Ottoman Empire
- Ottoman Turks
- Ottoman dynasty
- Ouan era
- Ouch!
- Ouchou era
- Ouei era
- Ouhou era
- Ounin era
- Our
- Out of sight
- Out of the mouth comes evil
- Outer Mongolia
- Outer shrine of Ise
- Outoku era
- Output Control System
- Output Processor
- Outstanding Performance Award
- Ouwa era
- Overhead Projector
- Overseas Economic Cooperation Fund
- Oversight Department
- Oversight Department of the Left
- Owara-Kaze-no-Bon Festival
- Oxbridge
- Oxford
- Oxford school
- Oxyfull
- Oxyopes sertatus
- Oya tuff stone
- Oyashio class submarine
- Ozone Layer Protection Law
- Oバック [オーバック]
- Oリング [オーリング]
- O型 [オーがた]
- P
- P-valve
- P-wave
- P.O.box address
- P.S.
- P24T
- P2H4
- P3C
- P3C [ピーさんシー]
- P5
- P54C
- P55C
- P6
- P7
- P;p [ピー]
- PA
- PA system
- PA system on a train
- PA-RISC
- PABX
- PAD
- PAPVC
- PAPVD
- PAPVR
- PASCAL
- PASMO
- PB
- PB SRAM
- PBX
- PBX [ピービーエックス]
- PC
- PC DOS
- PC [ピーシー]
- PC board
- PC shop
- PC tax reduction
- PC using a TV as a monitor
- PC-98
- PC-AT
- PC-PTOS
- PC-VAN
- PC-XT
- PC100
- PCB
- PCI
- PCI [ピーシーアイ]
- PCM
- PCM [ピーシーエム]
- PCMCIA
- PCO
- PCR
- PCR法 [ピーシーアールほう]
- PCS
- PCTR
- PCWEEK
- PD
- PD PR
- PDA
- PDA [ピーディーエー]
- PDAU
- PDL
- PDM
- PDP
- PDS
- PDU
- PECC
- PEL
- PEN club
- PER
- PER [パー]
- PET
- PET [ペット]
- PET bottle
- PETボトル [ペットボトル]
- PF key
- PG
- PGI
- PH3
- PHS
- PHS [ピーエッチエス;ピーエイチエス]
- PHS phone
- PHS portable phone
- PHY
- PI
- PIAFS
- PICS
- PICT
- PIF
- PIM
- PIN
- PIO
- PIXIT
- PK
- PKF
- PKF [ピーケーエフ]
- PKO
- PKO [ピーケーオー]
- PKZIP
- PL
- PL-1
- PL-SQL
- PLC
- PL教団 [ピーエルきょうだん]
- PM
- PM [ピーエム]
- PMO
- PO
- POP
- POP3
- POPmail
- POS
- POS [ポス;ピーオーエス]
- POS system
- POS terminal
- POSIX
- POSシステム [ポスシステム;ピーオーエスシステム]
- POS端末 [ポスたんまつ]
- POW camp
- PPE
- PPI
- PPM
- PPP
- PR
- PR [ピーアール]
- PR brochure
- PR department
- PR manager
- PRAM
- PRDMD
- PRI
- PRMD
- PROLINEA
- PROLOG
- PROM
- PRP
- PReP
- PS
- PS-2
- PSG
- PSI
- PSINet
- PSION
- PSK
- PSRAM
- PSU
- PSW
- PT
- PTA
- PTA [ピーティーエー]
- PTO
- PTOS
- PTSD
- PTSD [ピーティーエスディー]
- PTT
- PUREX
- PUREX [ピューレックス]
- PUREX process
- PV
- PV [ピーブイ]
- PVAC
- PVC
- PVC [ピーブイシー]
- PVC pipe
- PVC管 [ピーブイシーかん]
- PWB
- PWR
- PWR [ピーダブリューアール]
- PX
- Pacific
- Pacific Economic Cooperation Council
- Pacific Islands
- Pacific League
- Pacific Ocean
- Pacific Ocean coastal regions of Honshu
- Pacific Ocean countries
- Pacific Rim nations
- Pacific Telesys
- Pacific Time
- Pacific War
- Pacific blackdragon
- Pacific bluefin tuna
- Pacific coast
- Pacific cod
- Pacific double-saddle butterflyfish
- Pacific fleet
- Pacific flying squid
- Pacific golden plover
- Pacific gregory
- Pacific herring
- Pacific island flatsedge
- Pacific lamprey
- Pacific longnose chimaera
- Pacific needlefish
- Pacific ocean perch
- Pacific oyster
- Pacific sandeel
- Pacific saury
- Pacific silver fir
- Pacific spadefish
- Pacific spookfish
- Pacific three-toothed lamprey
- Pacific white-sided dolphin
- Packard
- Paeonia suffrutticosa
- Page Description Language
- PageMill
- Paisley
- Pakistan
- Palace of the Dragon King
- Palaearctic
- Palaeolithic culture
- Palau
- Palearctic
- Paleocene epoch
- Paleolithic culture
- Paleotropical
- Paleozoic era
- Paleozoic group
- Palestine
- Pali
- Pallas's rosefinch
- Pallava Dynasty
- Palm Sunday
- Palmae
- Pan
- Pan-Americanism
- Pan-Asiatic Conference
- Pana-Wave Laboratory
- Panaeolus papilionaceus
- Panama
- Panama sergeant major
- Panama spadefish
- Panamanian sergeant
- Panamax
- Panamic sergeant major
- Panasert hole
- Pandanus boninensis
- Pandara
- Pandora's box
- Pangaea
- Panjabi
- Panmunjon
- Panthera
- Pantone
- Pap
- Pap smear
- Pap test
- Papa
- Papaver rhoeas
- Papenfussiella kuromo
- Paphia euglypta
- Papua New Guinea
- Papua monitor
- Papuan black snapper
- Papuan toby
- Para rubber
- Para rubber tree
- Parabenzoin praecox
- Paracanthurus
- Paradise Lost
- Parafontaria laminata
- Paragaleus
- Paralympics
- Parapoxvirus
- Parascylliidae
- Parascyllium
- Parathion
- Pardon makes offenders
- Pardon me for leaving
- Parent-Teacher Association
- Pareto optimum
- Paris
- Paris Collection
- Paris club
- Paris syndrome
- Paris tetraphylla
- Paris verticillata
- Parkinson
- Parkinson's disease
- Parkinson's law
- Parlement
- Parmaturus
- Parmesan cheese
- Parnassian
- Parnassians
- Parsee
- Parsi
- Parthenon
- Particle System
- Parupeneus
- Pascal
- Pascal's law
- Pascal's theorem
- Pascal's triangle
- Passable
- Passing a whole task onto someone else
- Passion Play
- Passion Week
- Passion music
- Passover
- Pastoral Epistles
- Patagonian toothfish
- Patent Act
- Patience is the only way
- Patriotic War
- Pauli's principle
- Pauline Epistles
- Pauline epistles
- Paullinia cupana
- Paulownia tomentosa
- Pavlov
- Pax Americana