| Position | Pitcher |
|---|---|
| Bats | Right |
| Throws | Right |
| Birth date | December 21, 1897 |
| Birth place | Barberton, Ohio, U.S. |
| Death date | August 13, 1952 (aged 54) |
| Death place | Los Angeles, California, U.S. |
| 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 Haid (December 21, 1897 – August 13, 1952) was an American 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.