# Mo

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

## 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 (born 1964), 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 former municipality in the old Telemark county
* Mo, Vestland, a village in Modalen municipality, Vestland 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 (postal abbreviation)
* 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

## 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