Clem Lewis (22 June 1890 – 27 October 1944) was a Welsh international fly-half who played club rugby for Cardiff. Lewis was capped for Wales eleven times either side of World War I, and captained his country on two occasions. Born in Bridgend, Lewis moved to first class team, Cardiff, in 1909 from local club Bridgend. Lewis won two rugby 'blues' for Cambridge and played for invitational team the Barbarians.