| Bob Ayrault | |
| Position: | Pitcher |
| Birth Date: | 27 April 1966 |
| Birth Place: | South Lake Tahoe, California, U.S. |
| Bats: | Right |
| Throws: | Right |
| Debutleague: | MLB |
| Debutdate: | June 7 |
| Debutyear: | 1992 |
| Debutteam: | Philadelphia Phillies |
| Finalleague: | MLB |
| Finaldate: | July 25 |
| Finalyear: | 1993 |
| Finalteam: | Seattle Mariners |
| Statleague: | MLB |
| Stat1label: | Win–loss record |
| Stat1value: | 5–3 |
| Stat2label: | Earned run average |
| Stat2value: | 4.05 |
| Stat3label: | Strikeouts |
| Stat3value: | 42 |
| Teams: | |
Robert Cunningham Ayrault (born April 27, 1966) is an American former professional baseball right-handed pitcher, having played for two Major League Baseball (MLB) teams.
An alumnus of the University of Nevada, Las Vegas, Ayrault would make his MLB debut with the Philadelphia Phillies on June 7, 1992, against the St. Louis Cardinals, at Veterans Stadium, in Philadelphia; his last MLB appearance was for the Seattle Mariners, on July 25, 1993, on the road, versus the Cleveland Indians (at Cleveland Stadium). Although he pitched minor league ball for a few more seasons, his major league career was over at only age 27.