| Term Start: | 1 March 1987 |
| Term End: | 7 October 1990 |
| Term Start2: | 13 August 1992 |
| Term End2: | 16 July 2000 |
| Birth Date: | 1939 |
| Death Place: | Libya |
Umar Mustafa Al Muntasir (ar|عمر مصطفى المنتصر) (1939 - 23 January 2001) was secretary of the General People's Committee (Prime Minister) of the Libyan Arab Jamahiriya[1] from 1 March 1987 to 7 October 1990.[2] He succeeded Jadallah Azzuz at-Talhi as secretary of the General People's Committee in a cabinet reshuffle.[3] Al Muntasir also served as the foreign minister from 13 August 1992 until 16 July 2000. Umar Mustafa died of natural causes on 23 January 2001.