Oh

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

Abbreviations

Chemistry

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

Others

• OH, U.S. state of Ohio
• OH, IATA code for the airline Comair
• OH, IATA code for PSA Airlines
• o.h., overall height in architecture
• OH, an abbreviation commonly used on Twitter which stands for "overheard"
• Observation helicopter, military abbreviation
• OH, oral hygiene

Music

Songs

• "Oh!", a song by Boys Noize from Oi Oi Oi, 2007
• "Oh!", a song by The Breeders from Pod, 1990
• "Oh" (Ciara song), 2005
• "Oh," a song by Fugazi from The Argument, 2001
• "Oh!" (Girls' Generation song), 2010
• "Oh!", a song by Micky Green from White T-Shirt, 2007
• "Oh!" (Pink Lady song), 1981
• "Oh!", a song by Sleater-Kinney from One Beat, 2002

Albums

• Oh! (Girls' Generation album), 2010
• Oh! (ScoLoHoFo album), 2003
• Oh!, an extended play by Switchfoot, 2006

Names

• Oh (surname), Korean and Japanese surnames romanized as "Oh" or "O"
• Ou (surname), Chinese and Cantonese surnames pronounced as "Oh" or "O"
• Dennis Oh, Korean actor
• Nadia Oh, English vocalist

Others

• OH, registration prefix for aircraft registered in Finland
• Oh! (TV channel), an Australian cable TV channel owned by Optus Television
• Oh!, former name of American TV channel Oxygen
• Oh!, an interjection
• OH, designation for organic-rich clay or silt of high plasticity in the Unified Soil Classification System
• OH, prefix of hominid fossils found at Olduvai Gorge