Colin Stetson (born March 3, 1975) is an American saxophonist, multireedist, and composer based in Montreal. He is best known as a regular collaborator of the indie rock acts Arcade Fire, Bon Iver, Bell Orchestre, and Ex Eye. In addition to saxophone, he plays clarinet, bass clarinet, French horn, flute, and cornet.

Stetson has released various solo releases, including his debut and subsequent albums New History Warfare Vol. 1, 2, & 3, a collaborative studio album with violinist Sarah Neufeld entitled Never Were the Way She Was (2015), Sorrow: A Reimagining of Henryk Górecki's 3rd Symphony (2016), and All This I Do for Glory (2017). Since 2013, Stetson has contributed the scores to several films and television series.