Tuominen is a Finnish surname. Notable people with the surname include:
Arvo Tuominen (1894–1981), Finnish politician and journalistHenri Tuominen (born 1991), Finnish ice hockey playerJoni Tuominen (born 1982), Finnish ice hockey playerKaarlo Tuominen (1908–2006), Finnish steeplechase runnerMinttu Tuominen (born 1990), Finnish ice hockey playerOiva Tuominen (1908–1976), Finnish fighter ace and a Mannerheim Cross knightOlli Tuominen (born 1979), Finnish squash playerSaara Tuominen (born 1986), Finnish ice hockey playerVisa Tuominen (born 1983), Finnish figure skater