Ochiai (written: 落合) is a Japanese surname. Notable people with the surname include:
- Fukushi Ochiai (落合 福嗣, born 1987), Japanese voice actor
- Hidy Ochiai (落合 秀彦, born 1939), Japanese judoka, karateka and writer
- Hiromitsu Ochiai (落合 博満, born 1953), Japanese baseball player and manager
- Hiroshi Ochiai (落合 弘, born 1946), Japanese footballer
- Masayuki Ochiai (落合 正幸), Japanese film director
- Ochiai Michihisa (落合 道久), Japanese samurai
- Motoki Ochiai (落合 モトキ, born 1990), Japanese actor
- Ochiai Naobumi (落合 直文, 1861-1903), pseudonym of Ayukai Morimitsu, Japanese poet
- Osamu Ochiai (落合 治, born 1931), Japanese sport shooter
- Rumi Ochiai (落合 るみ, born 1973), Japanese voice actress
- Tomoya Ochiai (落合 知也, born 1987), Japanese basketball player
- Tetsuya Ochiai (落合 哲也, born 2003), Japanese sumo wrestler competing under the name Hakuōhō
- Yoichi Ochiai (落合 陽, born 1987), is a Japanese academic and media artist
See also
edit- Ochiai, Okayama, a former town in Maniwa District, Okayama Prefecture, Japan
- Ochiai Station (disambiguation), multiple railway stations in Japan