Felix Williamson (born 29 May 1969) is an Australian actor.

From age 13–17, he trained at the Australian Theatre for Young People in Sydney, Australia, learning the foundations of acting.

He has had many roles in television, film and theatre and portrayed Paul Keating in the 2010 telemovie, Hawke opposite Richard Roxburgh's Bob Hawke.

He portrays a Commonwealth Bank executive in various advertisements for the bank, usually in the role of rebuffing advice from incompetent American advertisement consultants who display ignorance of Australian society and buffoon-like behaviour.

Felix has taken part in a variety of television shows including famous to CBBC, Me and My Monsters playing Nick Carlson (Dad), and Underbelly: Razor.