The DeMarco–Becket Memorial Trophy is a Canadian Football League trophy. It is awarded originally to the player selected as the outstanding lineman in the West Division. The trophy was donated by the families of Mel Becket and Mario DeMarco, who were two prominent Saskatchewan Roughriders players who were victims of the Mount Slesse aircraft disaster on December 9, 1956. Prior to 1974 the CFL's Most Outstanding Lineman Award was awarded to both outstanding defensive players and outstanding linemen in the West Division, and this award was different from the DeMarco–Becket Memorial Trophy.