| Country: | San Marino |
| Flag Year: | 1862 |
| Type: | parliamentary |
| Previous Election: | 1959 |
| Next Election: | 1969 |
| Election Date: | 13 September 1964 |
| Seats For Election: | All 60 seats in the Grand and General Council |
| Majority Seats: | 31 |
| Turnout: | 83.99% (1.76pp) |
| Noleader: | yes |
| Party1: | Sammarinese Christian Democratic Party |
| Last Election1: | 27 |
| Seats1: | 29 |
| Percentage1: | 46.83 |
| Party2: | Sammarinese Communist Party |
| Last Election2: | 16 |
| Seats2: | 14 |
| Percentage2: | 24.11 |
| Party3: | Sammarinese Independent Democratic Socialist Party |
| Last Election3: | 9 |
| Seats3: | 10 |
| Percentage3: | 16.17 |
| Party4: | Sammarinese Socialist Party |
| Last Election4: | 8 |
| Seats4: | 6 |
| Percentage4: | 10.68 |
| Party5: | Movement for Constitutional Freedoms |
| Last Election5: | new |
| Seats5: | 1 |
| Percentage5: | 2.22 |
General elections were held in San Marino on 13 September 1964.[1] The Sammarinese Christian Democratic Party remained the largest party, winning 29 of the 60 seats in the Grand and General Council,[2] and continued their coalition with the Independent Democratic Socialist Party.
Voters had to be citizens of San Marino and at least 24 years old. This was the first election in San Marino with women's suffrage.[3] [4]