Oh

Oh, OH, or Oh! is an interjection, often proclaiming surprise. It may refer to:

Albums

 * Oh! (Girls' Generation album), 2010
 * Oh! (ScoLoHoFo album), 2003
 * OH (ohio), by Lambchop, 2008
 * Oh!, an EP that came with the preorders of Oh! Gravity. by Switchfoot, 2006

Songs

 * "O (Oh!)", 1920 by Ted Lewis, 1953 by Pee Wee Hunt
 * "Oh" (Ciara song), 2005
 * "Oh!" (Girls' Generation song), 2010
 * "Oh!" (The Linda Lindas song), 2021
 * "Oh!" (Pink Lady song), 1981
 * "Oh" (Stray Kids song), 2021
 * "Oh!", by Boys Noize from Oi Oi Oi
 * "Oh!", by The Breeders from Pod
 * "Oh", by Dave Matthews from Some Devil
 * "Oh", by Fugazi from The Argument
 * "Oh", by Juliana Hatfield from Made in China
 * "Oh!", by Micky Green from White T-Shirt
 * "Oh!", by Sleater-Kinney from One Beat
 * "Oh", by Spratleys Japs from Pony
 * "Oh!", by The Trudy
 * "Oh," by Underworld, recorded for the soundtrack to A Life Less Ordinary, 1997

Other media

 * Oh! (TV channel), an Australian cable TV channel owned by Optus Television
 * Oxygen, an American TV channel formerly called "Oh!"
 * Oh, a Boov alien from Home (2015)

People

 * Oh (surname), Korean surname romanized as "Oh" or "O"
 * Oh (Japanese surname), Japanese surname derived from Wang(王)
 * Ou (surname), Chinese and Cantonese surnames pronounced as "Oh" or "O"
 * Dennis Oh, Korean actor
 * Nadia Oh, English vocalist

Chemistry

 * OH, the hydroxy functional group
 * OH−, hydroxide anion
 * •OH, hydroxyl radical
 * OH, the alcohol class of compounds, that possess a hydroxy functional group

Other uses in science and technology

 * OH, prefix of hominid fossils found at Olduvai Gorge
 * OH, designation in the Unified Soil Classification System for organic-rich clay or silt of high plasticity
 * Oh, the point group of octahedral molecular geometry
 * Ohnesorge number, a dimensionless number that relates the viscous forces to inertial and surface tension forces

Transportation

 * OH, registration prefix for aircraft registered in Finland
 * Comair (United States) (IATA airline code OH)
 * PSA Airlines (IATA airline code OH)
 * Observation helicopter, in military abbreviation

Other uses

 * Ohio, US (postal abbreviation)
 * O.H., post-nominal letters for the Brothers Hospitallers of Saint John of God
 * OH, an abbreviation for the Orphic Hymns