| Country: | San Marino |
| Flag Year: | 1862 |
| Type: | parliamentary |
| Previous Election: | 1909 |
| Next Election: | 1915 |
| Election Date: | 23 June 1912 |
| Seats For Election: | 20 of the 60 seats in the Grand and General Council |
| Majority Seats: | 31 |
| Turnout: | 49.97% (24.86pp) |
| Noleader: | yes |
| Party1: | Independents |
| Last Election1: | 20 |
| Seats1: | 20 |
| Percentage1: | 100% |
General elections were held in San Marino on 23 June 1912 to elect the third term of the Grand and General Council.[1]
In accordance with the decision of the Meeting of 1906, one third of the seats of the Grand and General Council should be renewed every three years. As a result, twenty of the forty councillors elected in 1906 were chosen by random sortition to finish their term this year.
All councillors were elected in their constituency using a plurality-at-large voting, a non-partisan system. However, as happened in 1906 and 1909, candidates elected generally belonged to the liberal group which had supported the democratic action of the Citizenry Meeting or, more, were members of the sole organized party of the country, the Sammarinese Socialist Party. These two factions returned in alliance to create a government coalition, the Democratic Bloc, which worked around public schools and forms of insurance for workers.[2]
Voters had to be citizens of San Marino, male, the head of the family and 24 years old.