Elmer William Weingartner (August 13, 1918 – March 15, 2009) was a shortstop in Major League Baseball who played for the Cleveland Indians during the 1945 season.

Listed at 5 ft 11 in (1.80 m), 178 lb (81 kg), Weingartner batted and threw right-handed.

In his one-season career, Weingartner was a .231 hitter (9-for-39) in 20 games, including one RBI, five runs, one double and a .302 on-base percentage without home runs or stolen bases.

Weingartner died in Elyria, Ohio, at age 90.

This biographical article relating to an American baseball shortstop is a stub.