John Andrew Rabb (born June 23, 1960) is an American former professional baseball player.

A right-handed batter and thrower, the 6 ft 1 in (1.85 m), 185 lb (84 kg) Rabb was selected by the Giants in the 11th round of the 1978 Major League Baseball Draft from Washington Preparatory High School.

He had a brief trial with the Giants in 1982 after hitting 22 home runs for Triple-A Phoenix, then was returned to the minor leagues to begin 1983.

The Giants traded Rabb to the Atlanta Braves for another catcher, Alex Treviño, prior to the 1985 season.

But Rabb spent much of the campaign with the Richmond Braves and got into only three games for Atlanta at the end of the season, plus nine more for 1988 Seattle Mariners, to culminate his MLB career.