Robert Earl Allen (July 2, 1914 – October 30, 2005) was a Major League Baseball pitcher. Allen played for the Philadelphia Phillies in 1937. He batted and threw right-handed.
Pitching in a total of 3 games, Allen's only decision came on October 2, 1937, when he started the game and pitched 5+2⁄3 innings, surrendered 7 runs (4 earned), as the Phillies were defeated, 1–7, to the Boston Bees at Braves Field.
Allen was born in Smithville, Tennessee, and died in Chesapeake, Virginia.