| Election Name: | 1971 Sudanese presidency referendum |
| Country: | Sudan |
| Flag Year: | 1970 |
| Type: | presidential |
| Ongoing: | no |
| Next Election: | 1977 Sudanese presidential election |
| Next Year: | 1977 |
| Election Date: | 15 September 1971 |
| Nominee1: | Jaafar Nimeiry |
| Party1: | Sudanese Socialist Union |
| Popular Vote1: | 3,839,374 |
| Percentage1: | 98.6% |
| President | |
| Before Election: | Jaafar Nimeiry |
| Before Party: | Sudanese Socialist Union |
| After Election: | Jaafar Nimeiry |
| After Party: | Sudanese Socialist Union |
A referendum on the presidency of Jaafar Nimeiry was held in Sudan on 15 September 1971. It came after Nimeiry was overthrown in a Communist coup in July, followed by his reinstatement. He was backed by 98.6% of voters, with a turnout of 92.9%.[1]