Kauppinen is a Finnish surname. Notable people with the surname include:
Aarne Kauppinen (1889–1927), Finnish artisan, smallholder and politician Hannele Kauppinen (born 1955), Finnish singer known by her stage name Taiska Marko Kauppinen (born 1979), Finnish ice hockey player Juho Kauppinen (born 1986), Finnish accordionist Jarkko Kauppinen (born 1992), Finnish biathlete Liisa Kauppinen (born 1939), Finnish human rights activist Sean Kauppinen, American video game executive