Oh

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

Arts and entertainment

Music

Albums

• Oh! (Girls' Generation album), 2010
• Oh! (ScoLoHoFo album), 2003
• 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!" (Pink Lady song), 1981
• "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

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

Science and technology

Chemistry

• OH, hydroxyl functional group
• OH⁻, hydroxide
• ^•OH, hydroxyl radical
• OH, the functional alcohol group in a molecule

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
• O_h, the point group of octahedral molecular geometry
• Ohnesorge number, a dimensionless number that relates the viscous forces to inertial and surface tension forces
• Oral hygiene

Transportation

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

Other uses

• Ohio, US (postal abbreviation)
• Office Hours
• O.H., post-nominal letters for the Brothers Hospitallers of Saint John of God