OMG may refer to:

Abbreviations

* ''Oh my God!'' (sometimes also ''Oh my Goodness!'' or ''Oh my Gosh!'') is a common abbreviation meaning shock or surprise, often used in SMS language#SMS dictionaries, SMS messages and Internet communications * OMG is the IATA code for Omega Airport, Omega, Namibia * Operational manoeuvre group of the Soviet military * Outlaw motorcycle gangs * Order of Mapungubwe (Gold (OMG), for exceptional achievements) * Oh My Gigabytes!, a Telkomsel Internet package * One Man Gang wrestling

Books

*''OMG! Magazine'', a news, entertainment, and lifestyle magazine *''Oh My Goddess!'', a 1988 manga *''OMGWACA'', initialism for the 2019-2023 ''Oh My God, What a Complete Aisling'' book series

Film and television

* ''OMG – Oh My God!'', a 2012 Indian religious comedy-drama film by Umesh Shukla ** ''OMG 2'', a 2023 sequel film by Amit Rai * Oh My Ghost (2015 TV series), ''Oh My Ghost'' (TV series), a 2015 South Korean television series * Oh My God (Louis C.K. special), ''Oh My God'' (Louis C.K. special), 2013 * OMG (Oh, My Girl!), ''OMG'' (Oh, My Girl!), a 2009 romantic comedy film directed by Dante Nico Garcia * ''OMG: O Manchi Ghost'', 2024 Telugu film

Games

* OMG (eSports), a Chinese ''League of Legends'' gaming team * OMGcon, an anime/gaming convention in Kentucky, US

Music

Bands

* OMG (group) (Officially Miss Guided), a teenage American girl group * Oh My Girl, a South Korean girl group * Old Man Gloom, an American extreme metal band

Albums

* OMG (album), ''OMG'' (album), Rusko *OMG (single album), ''OMG'' (single album), NewJeans

Songs

* OMG (Usher song), "OMG" (Usher song), 2010 * OMG (Camila Cabello song), "OMG" (Camila Cabello song), 2017 * OMG (Gryffin and Carly Rae Jepsen song), "OMG" (Gryffin and Carly Rae Jepsen song), 2019 * OMG (NewJeans song), "OMG" (NewJeans song), 2023 * OMG (Candelita song), "OMG" (Candelita song), a 2024 by Jose Iglesias (baseball), Jose Iglesias * "O.M.G", by Jenna Rose * "OMG", by Little Mix from ''Get Weird'' * "OMG", by Arash discography#Singles, Arash * "OMG", a song by Koda Kumi from the 2019 album ''Re(cord)'' * "OMG!", single by German rapper Marteria * "OMG", song by Sampa the Great * "OMG (Oh My God)", by TaeTiSeo from ''Twinkle (EP), Twinkle'' * "OMG (Oh My Gosh)", by Sabrina Washington

People

* O'Shea Jackson Jr., known by his stage name OMG, is an American actor, rapper and son of Ice Cube

Politics

* Orkney Manifesto Group, a political party based in Orkney, Scotland

Science and technology

* OMG (gene), encodes the oligodendrocyte-myelin glycoprotein in humans * OMG particle, an ultra-high-energy cosmic ray observed in 1991 * Object Management Group, on computer industry standards * OM Group, a chemistry firm based in Cleveland, Ohio, United States * OpenMG, file format's filename extension