Harold Edward Wagner (July 2, 1915 – August 4, 1979) was an American professional baseball player who was a catcher in Major League Baseball from 1937 to 1949, playing a total of 672 games for the Philadelphia Athletics, Boston Red Sox, Detroit Tigers, and Philadelphia Phillies.

Born in East Riverton, New Jersey, a suburb of Philadelphia, Wagner batted left-handed, threw right-handed, and was listed at 6 ft 0 in (1.83 m), 165 lb (75 kg).

Altogether, Wagner hit for a .248 average with 15 home runs and 228 RBI, and had a .981 fielding percentage, during his major league career.

Early in the 1944 season, Wagner appeared in 5 games with the Athletics in limited duty – four times as a pinch hitter (batting 1-for-4), and once as a late-inning defensive replacement.

[7] In total, Wagner played parts of 8 seasons with the Athletics, appearing in 339 games while batting .234 with 3 home runs and 89 RBI.

But with World War II still ongoing, Wagner was called to serve, and on August 28 he joined the US Army.

Overall, Wagner played in 204 games during parts of three seasons with Boston, batting .264 with 7 home runs and 96 RBI.

Through the end of the 1947 season, Wagner appeared in 71 games with Detroit, batting .288 with 5 home runs and 33 RBI, backing up Bob Swift at catcher.

During 1948, Wagner again was in a backup role, and he struggled at the plate, batting .202 with 10 RBI in 54 games through his final appearance with Detroit on September 9 – he was waived by the team shortly thereafter.

Over parts of two seasons with the Tigers, Wagner appeared in 125 games while batting .257 with 5 home runs and 43 RBI.