| Election Name: | 1915 San Francisco mayoral election |
| Country: | San Francisco |
| Flag Image: | Flag of San Francisco (1900-1940).svg |
| Type: | presidential |
| Ongoing: | no |
| Previous Election: | 1911 San Francisco mayoral election |
| Previous Year: | 1911 |
| Next Election: | 1919 San Francisco mayoral election |
| Next Year: | 1919 |
| Image1: | JamesRolphJr Crop.jpg |
| Candidate1: | James Rolph Jr. |
| Party1: | Republican |
| Popular Vote1: | 63,814 |
| Percentage1: | 53.86% |
| Candidate2: | Eugene Schmitz |
| Party2: | Non-partisan |
| Popular Vote2: | 36,006 |
| Percentage2: | 30.39% |
| Image3: | Andrew J. Gallagher 1917.png |
| Candidate3: | Andrew J. Gallagher |
| Party3: | Union Labor |
| Popular Vote3: | 15,924 |
| Percentage3: | 13.44% |
| Mayor | |
| Before Election: | James Rolph Jr. |
| Before Party: | Republican Party (United States) |
| After Election: | James Rolph Jr. |
| After Party: | Republican Party (United States) |
The 1915 San Francisco mayoral election was held on September 28, 1915. Incumbent James Rolph Jr. was re-elected with 53% of the vote.[1]