The 1911 San Diego mayoral election was held on April 4, 1911 to elect the mayor for San Diego. Incumbent Mayor Grant Conard and James E. Wadham received the most votes in the primary election and advanced to the runoff. Wadham was then elected mayor with a majority of the votes.
On March 21, 1911, Conard and Wadham received the two highest vote totals in the primary and advanced to the general election. Wadham was then elected mayor on April 4, 1911 with a majority of the votes in the runoff.