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
Hiromi Ozawa (小沢 洋美; born 1961), Japanese speed skater
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
Keiichi Ozawa (小澤 啓一; born 1933), Japanese film director
Kenji Ozawa (born 1968), Japanese musician, nephew of Seiji Ozawa
Maria Ozawa (born 1986), Japanese adult video (AV) actress
Masashi Ozawa (小沢 正志; 1947–2023), Japanese professional wrestler
Masazumi Ozawa (小澤 正澄), Japanese composer, music arranger and guitarist
Michihiro Ozawa (born 1932), Japanese football player
Narutaka Ozawa (born 1974), Japanese mathematician
Natsuki Ozawa (born 1972), Japanese singer, actress and adult video (AV) performer
Ryota Ozawa (born 1988), Japanese actor
Sachi Ozawa (小澤 幸; born 1976), Japanese speed skater
Sakihito Ozawa (born 1954), Japanese politician
Seiji Ozawa (1935–2024), Japanese conductor
Taishi Ozawa (born 1996), Japanese professional wrestler
Tsukasa Ozawa (born 1988), Japanese football player
Yuki Ozawa (born 1983), Japanese football player
Yuta Ozawa (小澤 雄太; born 1985), Japanese actor
