| Hal Haid | |
| Position: | Pitcher |
| Bats: | Right |
| Throws: | Right |
| Birth Date: | 21 December 1897 |
| Birth Place: | Barberton, Ohio |
| Death Place: | Los Angeles, California |
| Debutleague: | MLB |
| Debutdate: | September 19 |
| Debutyear: | 1919 |
| Debutteam: | St. Louis Browns |
| Finalleague: | MLB |
| Finaldate: | August 25 |
| Finalyear: | 1933 |
| Finalteam: | Chicago White Sox |
| Statleague: | MLB |
| Stat1label: | Win–loss record |
| Stat1value: | 14–15 |
| Stat2label: | Earned run average |
| Stat2value: | 4.16 |
| Stat3label: | Strikeouts |
| Stat3value: | 103 |
| Teams: | |
| Highlights: | |
Harold Augustine "Hal" Haid (December 21, 1897 – August 13, 1952) was a professional baseball player. He was a right-handed pitcher over parts of six seasons (1919, 1928–1931, 1933) with the St. Louis Browns, St. Louis Cardinals, Boston Braves and Chicago White Sox. For his career, he compiled a 14–15 record in 119 appearances, most as a relief pitcher, with a 4.16 earned run average and 103 strikeouts.
An alumnus of Belmont Abbey College, Haid was born in Barberton, Ohio and later died in Los Angeles at the age of 54.