Ruka may refer to:
- Ruka (Okage), a fictional character
- Rukatunturi (Finnish: Ruka), a ski resort in Finland
- Ruka Souen, a character from the Vampire Knight manga series and its anime
- Ruka (Mapuche), an indigenous housing form
- Ruka, a playable character from Fire Emblem Gaiden
- Ruka, a playable character from Tear Ring Saga
- Ruka Nogi,a manga character and anime character from Gakuen Alice (Alice Academy)