Hugh Noyes Mulcahy (September 9, 1913 – October 19, 2001) was an American pitcher for the Philadelphia Phillies (1935–40 and 1945–46) and the Pittsburgh Pirates (1947) of Major League Baseball. Born in Brighton, Massachusetts, he threw and batted right-handed, stood 6 ft 2 in (1.88 m) (188 cm) and weighed 190 pounds (86 kg).
Mulcahy was named to the 1940 National League All-Star Team.
Mulcahy had the nickname of "Losing Pitcher"; he lost 20 games in 1938 and 22 in 1940 and never had a full season in the majors in which he recorded more wins than losses. He also was first major leaguer to be drafted into United States military service before World War II, on March 8, 1941.
Mulcahy led the National League in Games (56), Walks Allowed (97) and Hit Batsmen (7) in 1937. Despite leading the League in Losses (20) and Earned Runs Allowed (137) he finished 25th in voting for the 1938 National League Most Valuable Player award for having 10 Wins, 46 Games, 34 Games Started, 15 Complete Games, 8 Games Finished, 1 Save, 267 ⅓ Innings Pitched, 294 Hits Allowed, 162 Runs Allowed, 14 Home Runs Allowed, 120 Walks Allowed, 90 Strikeouts, 6 Hit Batsmen, 5 Wild Pitches, 1,201 Batters Faced, 1 Balk and a 4.61 ERA.
Then, despite leading the NL in Hits Allowed (283) and Losses (22) he finished 29th in voting for the 1940 NL MVP. He also had 13 wins in 36 games (all starts), three shutouts, 280 innings pitched and a 3.60 ERA.
He led the National League in earned runs allowed (125), wild pitches (11) and hit batsmen (11) in 1939.
In nine years he had a 45–89 Win-Loss record, 220 Games, 143 Games Started, 63 Complete Games, 5 Shutouts, 48 Games Finished, 9 Saves, 1,161 ⅔ Innings Pitched, 1,271 Hits Allowed, 695 Runs Allowed, 579 Earned Runs Allowed, 69 Home Runs Allowed, 487 Walks Allowed, 314 Strikeouts, 39 Hit Batsmen, 36 Wild Pitches, 5,161 Batters Faced, 4 Balks and a 4.49 ERA.
In retirement, Mulcahy spent many years as a scout for the Chicago White Sox, and served one season (1970) as their pitching coach. He died at age 88 in Aliquippa, Pennsylvania.