| Tenure
| Incumbent
| Affiliation
| Notes
|
| Gabon Autonomous Republic
|
| 21 May 1957 to 26 July 1958 | Léon M’ba, Vice President of the Government Council | BDG |
|
| 26 July 1958 to 28 November 1958 | Léon M’ba, President of the Government Council |
|
| 28 November 1958 to 27 February 1959 | Léon M’ba, Head of the Provisional Government |
|
| 27 February 1959 to 17 August 1960 | Léon M’ba, Prime Minister |
|
| Gabonese Republic (République Gabonaise)
|
| 17 August 1960 to 21 February 1961 | Léon M’ba, Prime Minister | BDG | President from 17 August 1960
|
| 21 February 1961 to 17 February 1964 | Léon M’ba, President | Head of Government excercised by Head of State until 16 April 1975
|
| 19 February 1964 to 17 February 1964 | Léon M’ba, President |
|
| 18 February 1964 to 19 February 1964 | Jean-Hilaire Aubame, Provisional Prime Minister | Mil/UDSG | Usurper
|
| 19 February 1964 to 28 November 1967 | Léon M’ba, President | BDG |
|
| 2 December 1967 to 29 September 1973 | Albert-Bernard Bongo, President | BDG | Changed name to Omar Bongo on conversion to Islam
|
| 29 September 1973 to 16 April 1975 | Omar Bongo, President | BDG | Previously Albert-Bernard Bongo
|
| 16 April 1975 to 3 May 1990 | Léon Mébiame , Prime Minister | BDG |
|
| 3 May 1990 to 2 November 1994 | Casimir Oyé-Mba , Prime Minister | n-p |
|
| 2 November 1994 to 23 January 1999 | Paulin Obame-Nguema , Prime Minister | PDG |
|
| 23 January 1999 to present | Jean-François Ntoutoume Emane, Prime Minister | PDG |
|