OVI may refer to:
- Ohio Volunteer Infantry, volunteer regiment during the American Civil War
- Operating a Vehicle under the Influence (of alcohol and/or drugs)
- Optically Variable Ink, anti-counterfeiting measure in currency
- Open Verilog International, now Accellera
Ovi may refer to:
- Ovi (Nokia), former brand for Nokia's Internet services
- Ovi Magazine, an online magazine based in Helsinki, Finland.
- Ovi (music), a form of wedding music predominantly seen among the Hindu and Catholic community in Goa, India
- Alexander Ovechkin (b. 1985), Russian hockey player
- Ovidiu Cernăuţeanu (b. 1974), Romanian singer
- Ovi, Hungarian slang for Kindergarten
- Ovi, an Indian poetic metre.