Samuel Salmi (born 19 March 1951) is a Finnish prelate who was bishop of the Diocese of Oulu from 2001 to 2018.

Born in Muonio, Salmi graduated from the Faculty of Theology at the University of Helsinki in 1974.

Salmi became a Licentiate of Theology at the University of Helsinki in 1983, where he continued his studies and completed his doctoral thesis in 1990 with his dissertation "One Lord, One Faith, One Baptism".

The synod dissertation in the diocese of Oulu was born in 1984 on "The Baptism Key to the Unity of the Churches".

Salmi was one of the candidates nominated for Archbishop of Turku in 2010 and received the fifth highest number of votes.