Heikkinen is the eighth most common Finnish surname. Notable people with the surname include: Aki Heikkinen (born 1980), Finnish decathlete. Frans Heikkinen (1906–1943), Finnish cross country skier. Henna Heikkinen (born 1988), Finnish singer from Idols Finland 2. Ilkka Heikkinen (born 1984), Finnish ice hockey player. Janne Heikkinen (volleyball) (born 1976), Finnish volleyball player. Jussi Heikkinen (born 1988), Finnish football (soccer) player. Kasperi Heikkinen (born 1980), guitar player, member of Amberian Dawn. Leo Heikkinen (1917–1999), American businessman.
https://en.wikipedia.org/wiki/Heikkinen