Benjamin Rudolph Frey (April 6, 1906 – November 1, 1937) was a right-handed pitcher in Major League Baseball from 1929 to 1936, playing primarily with the Cincinnati Reds.

After spending time with the Toledo Mud Hens, Frey entered the major leagues in 1929 with the Cincinnati Reds.

[2] His best season was 1934 when he was 11–16 for the Reds with a 3.52 ERA (adjusted ERA+ of 116), finishing sixteenth in the 1934 National League Most Valuable Player voting.

[3] Frey appeared in 256 major league baseball games (127 as a starter) and had a lifetime record of 57–82 in 1160 innings pitched.

Frey committed suicide on November 1, 1937, in Spring Arbor Township, Michigan, at the home of his sister.