Seamus Blake (born December 1970) is a Canadian tenor saxophonist.

Born in London, England, Blake was brought up in Vancouver, Canada. His mother introduced him to jazz when he was a child and he later attended Berklee School of Music in Boston. Upon graduation moved to New York. In February 2002 he won the Thelonious Monk International Saxophone Competition. He currently plays with his own quintet (featuring David Kikoski, Lage Lund, Bill Stewart, and Matt Clohesy) and has been a regular with the Mingus Big Band as well as many other New York musicians.