Mo or MO may refer to:
Arts and entertainment Fictional characters Mo, a girl in the Horrible Histories TV series Mo, also known as Mortimer, in the novel Inkheart by Cornelia Funke Mo, in the webcomic Jesus and Mo Mo, the main character in the Mo's Mischief children's book series Mo, an ophthalmosaurus from The Land Before Time franchise MO (Maintenance Operator), a robot in the Filmation series Young Sentinels Mo, a main character in Zoey's Extraordinary Playlist M-O (Microbe Obliterator), a robot in the film WALL-E Mo the clown, a character played by Roy Rene, 20th-century Australian stage comedian Mo Effanga, in the BBC medical drama series Holby City Mo Harris, in the BBC soap opera EastEnders Little Mo Mitchell, in the BBC soap opera EastEnders
Films "Mo" (魔 demon), original title of The Boxer's Omen, a 1983 Hong Kong film Mo (2010 film), a television movie about British politician Mo Mowlam Mo (2016 film), a Tamil horror film
Music M.O. (album), a 2013 album by American hip hop artist Nelly M.O, an English pop trio MØ, a Danish singer The Mo, a Dutch pop band Mo Awards, annual awards for Australian live entertainment Yamaha MO, a music synthesizer
Other arts and entertainment Mo (Oz), a fictional country in the book The Magical Monarch of Mo by L. Frank Baum Mo (TV series), a 2022 comedy-drama Mo: A Woman's View of Watergate, a 1975 memoir of the Watergate Scandal
Businesses and organizations Altria Group, formerly Philip Morris (New York Stock Exchange symbol MO) Calm Air (IATA airline designator MO), an airline based in Thompson, Manitoba, Canada Milicja Obywatelska, a state police institution in Poland from 1944 to 1990
Language Mo (kana), Romanisation of the Japanese kana も and モ Mo language (disambiguation) Deg language (Ghana) Wakde language (New Guinea) Moldavian language (deprecated ISO 639-1 language code "mo")
People Mo (given name) Emperor Mo (disambiguation), the posthumous name of various Chinese emperors Mo (Chinese surname) Mo (Korean surname) MØ, Danish singer songwriter Karen Marie Ørsted (born 1988) Mr. Mo (rapper), rapper, member of the group Jim Crow Mr. Mo (singer), member of the Danish band Kaliber Mo Twister, Filipino radio DJ and TV host Mohan Gumatay (born 1977) Mo Hayder, a pen name of British crime novelist Beatrice Clare Dunkel (1962–2021) Mo (wrestler), ring name of Robert Horne (1964–2025), professional wrestler Mariano Rivera, Panamaian-American retired baseball player (born 1969), nicknamed "Mo"
Places Norway Mo i Rana, a town in Rana Municipality, Nordland county Mo, Agder, a village in Vegårshei Municipality, Agder county Mo, Innlandet, a village in Nord-Odal Municipality, Innlandet county Mo, Møre og Romsdal, a village in Surnadal Municipality, Møre og Romsdal county Mo, Telemark, a village in Tokke Municipality in Telemark county Mo, Vestland, a village in Modalen Municipality, Vestland county Mo Municipality, a former municipality in Telemark county Mo Church (disambiguation), a list of several churches by this name in Norway
Elsewhere County Mayo, Ireland (vehicle plate code MO) Macau (ISO 3166-1 alpha-2 country code MO) Missouri, US state (postal abbreviation MO) Moscow Oblast, Russia Province of Modena, Italy (vehicle plate code MO)
Religion Mo (divination), a traditional Tibetan Buddhist technique of divination Mo (religion), an animist religion of the Zhuang people of China Modern Orthodox Judaism, a movement that attempts to synthesize Orthodox Jewish values with the secular world
Science and technology Computing .mo, country code top level domain of Macau Magneto-optical drive (magneto-optical storage), a data storage medium Microsoft Office, an office software suite Mode of operation, in encryption block ciphers Motivating operation, a term describing the effectiveness of consequences in operant conditioning
Other uses in science and technology
Mo (grist mill) (磨), ancient Chinese stone implements used to grind grain into flour Magnus and Oberhettinger aka "Formulas and Theorems for the Functions of Mathematical Physics", a mathematics book on special functions Manual override, a mechanism wherein control is taken from an automated system and given to the user Metalorganics, also known as organometallics, in chemistry and materials science Molecular orbital, a mathematical function describing the wave-like behavior of an electron in a molecule Molybdenum, symbol Mo, a chemical element Momentary open (MO), a group of electrical switches Thom spectrum MO, in topology
Vehicles MO-class small guard ship, a class of small ships produced before and during World War II for the Soviet Navy Morris Oxford MO, an automobile produced by Morris Motors of the United Kingdom from 1948 to 1954
Other uses Mo (Chinese zoology), a name that semantically changed from "giant panda", to "a mythical chimera", to "tapir" Modus operandi (abbreviation m.o.), Latin meaning "mode of operation"; distinctive behavior patterns of an entity Month (abbreviation mo.), a unit of time of approximately 30 days Operation Mo, or the Port Moresby Operation, a Japanese plan to take the Australian Territory of New Guinea during World War II Medical officer (disambiguation) The Australian English diminutive word for moustache Tokyo Monorail, line prefix MO Monday
See also
M0 (disambiguation) Meaux (disambiguation) mho, in physics, the reciprocal of the "ohm" unit of resistance Mø (disambiguation) Mobile (disambiguation) Moe (disambiguation) Moe's (disambiguation) Mohs (disambiguation) Mow (disambiguation)