Léon Mébiame was a Gabonese politician who was the 2nd Prime Minister of Gabon. From 1975 to 1990, he served as the longest-serving prime minister in Gabonese history, at 15 years and 17 days.

Casimir Marie Ange Oyé-Mba was a Gabonese politician. After serving as Governor of the Bank of Central African States from 1978 to 1990, Oyé-Mba was Prime Minister of Gabon from 3 May 1990 to 2 Novemb