Ozawa (written: 小沢 or 小澤 lit. "small swamp") is a Japanese surname. Notable people with the surname include:
Eitaro Ozawa (1909-1988), Japanese actor
Ichirō Ozawa (born 1942), Japanese politician
Hideaki Ozawa (born 1974), Japanese football goalkeeper
Jisaburō Ozawa (1886-1966), Japanese admiral and last Commander-in-Chief of the Combined Fleet during World War II
Juri Osada (née Ozawa), Japanese figure skater and coach
Kenji Ozawa (born 1968), Japanese musician, nephew of Seiji Ozawa
Madoka Ozawa (born 1978), Japanese adult video (AV) actress
Michihiro Ozawa (born 1932), Japanese former football player
Maria Ozawa (born 1986), Japanese adult video (AV) actress
Naho Ozawa (born 1983), Japanese retired adult video (AV) actress
Natsuki Ozawa (born 1972), Japanese singer, actress and adult video (AV) performer
Ryota Ozawa (born 1988), Japanese actor
Sakihito Ozawa (born 1954), Japanese politician
Seiji Ozawa (born 1935), Japanese conductor
Tsukasa Ozawa (born 1988), Japanese football player
Yuki Ozawa (born 1983), Japanese football player