| Bob Hasty | |
| Position: | Pitcher |
| Bats: | Right |
| Throws: | Right |
| Birth Date: | 3 May 1896 |
| Birth Place: | Canton, Georgia, U.S. |
| Death Place: | Dallas, Georgia, U.S. |
| Debutleague: | MLB |
| Debutdate: | September 11 |
| Debutyear: | 1919 |
| Debutteam: | Philadelphia Athletics |
| Finalleague: | MLB |
| Finaldate: | May 28 |
| Finalyear: | 1924 |
| Finalteam: | Philadelphia Athletics |
| Statleague: | MLB |
| Stat1label: | Win–loss record |
| Stat1value: | 29–53 |
| Stat2label: | Earned run average |
| Stat2value: | 4.65 |
| Stat3label: | Strikeouts |
| Stat3value: | 167 |
| Teams: | |
Robert Keller Hasty (May 3, 1896 – May 28, 1972) was a professional baseball pitcher in the Major Leagues from to . Hasty played for the Philadelphia Athletics for all six of his major league seasons. In 1921, Hasty led all American League pitchers in fewest walks per 9 innings pitched, among qualified pitchers.