Ōtsuki

Ōtsuki may refer to:


 * Ōtsuki, Yamanashi, a city in Yamanashi Prefecture, Japan
 * Ōtsuki Station, a railway station in Ōtsuki, Yamanashi, Japan
 * Ōtsuki, Kōchi, a town in Hata District, Kōchi Prefecture, Japan
 * Ōtsuki (surname), a Japanese surname