Matti Kalevi Louekoski (born 14 April 1941) is a Finnish politician and a lawyer as profession. He is a member of the Social Democratic Party of Finland (SDP) and a former long-term member of the governing board of the Bank of Finland.^[1][2]

Louekoski was born in Oulu, and was elected to the Parliament for the periods of 1976-1979 and 1983–1996. He was a member of several cabinets, including Minister of Education in Aura cabinet of 1971, Minister of Justice in Sorsa cabinet 1972–1975,^[3] Minister of Justice in Holkeri cabinet 1987–1990. In 1990 Louekoski became the Minister of Finance in Holkeri cabinet when Erkki Liikanen became the ambassador to European Union.^[4] Louekoski's term as the Minister of Finance ended in the 1991 elections. Louekoski hold the post of a minister for total 2 782 days.

Louekoski served also in the Espoo city council 1977–2002. He was a member of the board of Imatra power 1974-1990 and a member of Finnish Olympic Committee 1988–1993. Louekoski left the Parliament in 1996 to become a member of the board of the Bank of Finland. He acted as the deputy chairman of the board 2000–2008.^[5] He retired on 1 January 2008.