Tominaga (written: 富永 or 冨永) is a Japanese surname. Notable people with the surname include:
- Ai Tominaga (冨永 愛, born 1982), Japanese fashion model and actress
- Geovanna Tominaga (born 1980), Brazilian actress and television host
- Hideaki Tominaga (富永 英明, born 1976), Japanese footballer
- Hiroyuki Tominaga (富永 啓之, born 1973), Japanese basketball player
- Keisei Tominaga (富永 啓生, born 2001), Japanese basketball player
- Kenji Tominaga (富永 研司, born 1970), Japanese actor
- Koyomi Tominaga (冨永 こよみ, born 1989), Japanese volleyball player
- Masanori Tominaga (冨永 昌敬, born 1975), Japanese film director
- Miina Tominaga (冨永 みーな, born 1966), Japanese voice actress and television personality
- Risaburo Tominaga (富永 利三郎, born 1930), Japanese sport wrestler
- Shozo Tominaga (富永 正三, died 2002), Japanese war criminal and peace activist
- Tominaga Nakamoto (富永 仲基, 1715–1746), Japanese philosopher
- Yasuhiro Tominaga (富永 康博, born 1980), Japanese footballer
See also
edit- Tominaga Dam, a dam in Aichi Prefecture, Japan