Koto may refer to:
- Koto (musical instrument), a Japanese musical instrument
- Koto (traditional clothing), a traditional dress made by Creole women in Suriname
- Koto (band), Italian/Dutch synth pop group
- Kōtō, Tokyo, a ward in Tokyo, Japan
- Koto (kana), a ligature of two Japanese katakana
- The novel The Old Capital by Yasunari Kawabata, originally titled "Koto" in Japanese
- Hikaru Koto, former porn star
- KOTO, a not-for-profit restaurant and vocational training program based in Hanoi, Vietnam
- KOTO (FM), a National Public Radio-affiliated radio station licensed to Telluride, Colorado, USA
- KOTO experiment, a particle physics experiment at J-PARC, Japan.
- Pterygota bequaertii, a timber species referred to by the trade name "Koto"