| Walter Hewett | |
| Position: | Manager |
| Bats: | Unknown |
| Throws: | Unknown |
| Birth Date: | 1861 |
| Birth Place: | Washington, D.C. |
| Death Date: | October 7, 1944 |
| Death Place: | Washington, D.C. |
| Statleague: | MLB |
| Stat1label: | Managerial W–L |
| Stat1value: | 10–29 |
| Stat2label: | Games |
| Stat2value: | 40 |
| Stat3label: | Winning percentage |
| Stat3value: | .256 |
| Teams: | |
Walter F. Hewett (1861 – October 7, 1944) was a baseball manager in the National League. In, his only season as manager, he managed the Washington Nationals to a record of 10 wins and 29 losses in 40 games.