| Country: | Mauritania |
| Flag Year: | 1959 |
| Yes: | 713,493 |
| No: | 14,999 |
| Invalid: | 3,020 |
| Electorate: | 857,121 |
A constitutional referendum was held in Mauritania on 12 July 1991. The new constitution would restore multi-party democracy for the first time since the 1960s, as well as creating a bicameral Parliament with a Senate and National Assembly. The constitution would not include term limits for the President.[1]
It was approved by 98% of voters with an 85% turnout.[2]