| Country: | People's Republic of Bulgaria |
| Flag Year: | 1946 |
| Previous Election: | 1945 |
| Next Election: | 1949 |
| Election Date: | 27 October 1946 |
| Turnout: | 92.61% |
| First Election: | yes |
| Party1: | BKP |
| Leader1: | Georgi Dimitrov |
| Percentage1: | 53.88 |
| Seats1: | 278 |
| Party2: | BZNS (NP)–ORSDP |
| Percentage2: | 28.35 |
| Seats2: | 101 |
| Party3: | Bulgarian Agrarian National Union |
| Percentage3: | 13.43 |
| Seats3: | 68 |
| Party4: | BRSDP |
| Percentage4: | 1.90 |
| Seats4: | 9 |
| Party5: | Zveno |
| Percentage5: | 1.68 |
| Seats5: | 8 |
| Party6: | RDP |
| Percentage6: | 0.21 |
| Seats6: | 1 |
| PM | |
| Before Election: | Kimon Georgiev |
| Before Party: | Bulgarian Fatherland Front |
| After Election: | Georgi Dimitrov |
| After Party: | Bulgarian Fatherland Front |
Constitutional Assembly elections were held in Bulgaria on 27 October 1946,[1] electing members of the sixth Grand National Assembly, which was tasked with adopting a new constitution. The Fatherland Front, an anti-fascist coalition dominated by the Bulgarian Communist Party, had come to power in 1944 following a coup. Now that World War II was over and the monarchy abolished, the communists wanted to adopt a new constitution. They won a large majority, with 54% of the vote and 278 of the 465 seats. Voter turnout was 93%.[2] This would be the lowest vote share that the Communists or the Fatherland Front would claim during the 43 years of the People's Republic of Bulgaria. In subsequent years, the Fatherland Front would claim to win elections with unanimous or near-unanimous support. This would be the last truly multi-party elections until 1990.