| Election Name: | 1911 San Francisco mayoral election |
| Country: | San Francisco |
| Flag Image: | Flag of San Francisco (1900-1940).svg |
| Type: | presidential |
| Ongoing: | no |
| Previous Election: | 1909 San Francisco mayoral election |
| Previous Year: | 1909 |
| Next Election: | 1915 San Francisco mayoral election |
| Next Year: | 1915 |
| Image1: | JamesRolphJr Crop.jpg |
| Candidate1: | James Rolph Jr. |
| Party1: | Republican |
| Popular Vote1: | 47,417 |
| Percentage1: | 60.34% |
| Candidate2: | P. H. McCarthy |
| Party2: | Union Labor |
| Popular Vote2: | 27,048 |
| Percentage2: | 34.42% |
| Mayor | |
| Before Election: | P. H. McCarthy |
| Before Party: | Union Labor Party (California) |
| After Election: | James Rolph Jr. |
| After Party: | Republican Party (United States) |
The 1911 San Francisco mayoral election was held on September 26, 1911. James Rolph Jr. was elected with 60% of the vote. It was San Francisco's first officially non-partisan election.