| Country: | Kingdom of Laos |
| Previous Election: | 1951 |
| Next Election: | 1958 |
| Election Date: | 25 December 1955 |
| Seats For Election: | All 39 seats in Parliament |
| Majority Seats: | 20 |
| Noleader: | yes |
| Nopercentage: | yes |
| Party1: | National Progressive Party |
| Seats1: | 22 |
| Last Election1: | 19 |
| Party2: | Independent Party |
| Seats2: | 7 |
| Last Election2: | 10 |
| Party3: | Democratic Party |
| Seats3: | 3 |
| Last Election3: | 4 |
| Party4: | Lao National Union Party |
| Seats4: | 2 |
| Last Election4: | 2 |
| Party5: | Independents |
| Seats5: | 5 |
| Last Election5: | 4 |
| Map: | 1955 Laotian parliamentary election - Deputies by province.svg |
Parliamentary elections were held in Laos on 25 December 1955 to elect members of the National Assembly, the lower chamber of Parliament.[1] The result was a victory for the ruling National Progressive Party, which won 22 of the 39 seats.[2] Voter turnout was 76%.
Elections were only held in ten of the twelve provinces.[3]