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. He was born in Cleveland, Ohio.
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.