Suomi is a surname literally meaning 'Finland' in the Finnish language. Notable people with this surname include:
Al Suomi (1913–2014), American ice hockey player Damion Suomi, American singer-songwriter and guitarist Eemeli Suomi (born 1995), Finnish ice hockey player Heidi Suomi (born 1975), Finnish sprinter John Suomi (born 1980), Canadian baseball player Stephen Suomi, American psychologist Verner E. Suomi (1915–1995), Finnish-American educator, inventor, and scientist