| Election Name: | 1931 Philadelphia mayoral election |
| Country: | Philadelphia |
| Type: | presidential |
| Ongoing: | no |
| Previous Year: | 1927 |
| Next Year: | 1935 |
| Image1: | File:Joseph Hampton Moore (March 8, 1864 – May 2, 1950) in 1916 (1).jpg |
| Nominee1: | J. Hampton Moore |
| Party1: | Republican Party (United States) |
| Popular Vote1: | 362,329 |
| Percentage1: | 92.04% |
| Nominee2: | Michael Donohoe |
| Party2: | Democratic Party (United States) |
| Popular Vote2: | 31,330 |
| Percentage2: | 7.96% |
| Mayor | |
| Before Election: | Harry Arista Mackey |
| Before Party: | Republican Party (United States) |
| After Election: | J. Hampton Moore |
| After Party: | Republican Party (United States) |
The 1931 Philadelphia mayoral election saw the return of J. Hampton Moore to the mayors office.