Thomas Gene Fisher (born April 4, 1942 in Cleveland, Ohio) is a former Major League Baseball pitcher. Nicknamed "Big Fish", the 6'0", 180 lb. right-hander was signed by the Baltimore Orioles as an amateur free agent before the 1962 season. He played briefly for the Orioles in 1967.

Fisher had a record of 10-6 with a 3.04 earned run average for the Triple-A Rochester Red Wings when he was called up to Baltimore in September 1967. His career minor league record at the time was 65-33, a winning percentage of .663. He made his major league debut in relief on September 20 against the Washington Senators at D.C. Stadium. He pitched 1.1 scoreless innings, walking two batters. His second big league action came two days later, in a home game against the Boston Red Sox. He hurled two more scoreless innings, striking out one batter, All-Star catcher Elston Howard.

On April 30, 1969 he was traded by the Orioles along with pitcher John O'Donoghue to the Seattle Pilots, and never again made it to the major league level. His lifetime ERA for 3.1 innings stands at 0.00.