Thomas Gentry Warren (July 5, 1917 – January 2, 1968) was an Oklahoma Muscogee Major League Baseball left-handed pitcher.

He made 22 pitching appearances for the Brooklyn Dodgers during the 1944 season, starting four of them and completing two, allowing 114 baserunners on 74 hits and 40 walks in just 682⁄3 innings.

He also gave up 52 runs (14 unearned), while his lone win came on July 30, 1944 in the first game of a doubleheader at Ebbets Field, when he was the starting pitcher in a 10–4 victory against the St. Louis Cardinals.

[1] Warren's 1944 season totals included a record of 1–4 with 18 strikeouts and an ERA of 4.98, ending ninth in the National League with 14 games finished.

[citation needed] Plagued by gambling problems and related debts, Warren died by suicide in his hometown of Tulsa, Oklahoma, at the age of 50.