Frank Mortimer (23 February 1932 – 4 March 2009) was an English professional rugby league footballer who played in the 1950s and 1960s. He played at representative level for Great Britain and Yorkshire, and at club level for , Wakefield Trinity (Heritage No. 596), and Keighley, as a fullback, or centre, i.e. number 1, or, 3 or 4.