Mikko Sumusalo is a Finnish professional footballer who plays as a defender for KTP. Sumusalo was born in Porvoo, Finland. Sumusalo began his senior club career playing for Klubi-04, before making his league debut for HJK at age 19 in 2009. He can play either leftback or wingback.

Kotkan Työväen Palloilijat is a Finnish football club based in Kotka, and currently competing in Finland's second-tier, the new Ykkösliiga. The club was founded in 1927 and its colours are green and white. Immediately after its formation the club joined the Finnish Workers' Sports Federation, to which it still belongs. KTP play its home matches at Arto Tolsa Areena.