Mikko Esa Juhani Heikka (born September 19, 1944 in Ylitornio) is a Finnish former bishop of the Evangelic Lutheran Church.
Geographically the townships and municipalities that make up the area are Haparanda, Övertorneå, Pajala and Kiruna in Sweden, and Tornio, Ylitornio, Pello, Kolari, Muonio and Enontekiö in Finland.