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| Term | Incumbent | Notes |
|---|---|---|
| Italian Suzerainty | ||
| 1 January 1934 | Italian colony of Libya: Tripolitania, Cyrenaica and Fezzan | |
| 1 January 1934 to 28 June 1940 | Italo Balbo, Governor-General | |
| 1 July 1940 to 25 March 1941 | Rodolfo Graziani, marchese di Neghelli, Governor-General | |
| 25 March 1941 to 19 July 1941 | Italo Gariboldi, Governor-General | |
| 19 July 1941 to 2 February 1943 | Ettore Bastico, Governor-General | |
| 2 February 1943 to 13 May 1943 | Giovanni Messe, acting Governor-General | |
| 13 May 1943 | end of Italian rule | |
| UN Administration | as UN Trust territory | |
| three constituent parts were administered separately: | Tripolitania British, Cyrenaica and Fezzan French | |
| 10 December 1949 to 24 December 1951 | Adrian Pelt, UN Commissioner (Netherlands) | (arrived in Tripoli 18 January 1950) |
| 24 December 1951 | Independence as United Kingdom of Libya | |
