| Type: | presidential |
| Mayor | |
| Before Election: | Elmer Robinson |
| Before Party: | Republican Party (United States) |
| After Election: | Elmer Robinson |
| After Party: | Republican Party (United States) |
| Election Name: | 1951 San Francisco mayoral election |
| Country: | San Francisco |
| Ongoing: | no |
| Previous Election: | 1947 San Francisco mayoral election |
| Previous Year: | 1947 |
| Next Election: | 1955 San Francisco mayoral election |
| Next Year: | 1955 |
| Candidate1: | Elmer Robinson |
| Image1: | Hon. Elmer E. Robinson Crop.jpg |
| Percentage1: | 38.60% |
| Popular Vote1: | 98,611 |
| Party1: | Republican Party (United States) |
| Candidate2: | George Christopher |
| Percentage2: | 37.84% |
| Popular Vote2: | 96,685 |
| Party2: | Republican Party (United States) |
| Candidate3: | J. Joseph Sullivan |
| Image3: | J. Joesph Sullivan.jpg |
| Percentage3: | 20.36% |
| Popular Vote3: | 52,013 |
| Party3: | Nonpartisan candidate |
The 1951 San Francisco mayoral election was held on November 6, 1951. Incumbent mayor Elmer Robinson narrowly won re-election with 38% of the vote.
| Elmer Robinson | 98,611 | 38.60% | |
| George Christopher | 96,685 | 37.84% | |
| J. Joseph Sullivan | 52,013 | 20.36% | |
| August R. "Gus" Oliva | 5,172 | 2.02% | |
| Frank A. Barbaria | 1,714 | 0.67% | |
| James F. Brennan | 1,307 | 0.51% |