Africa’s Longest Serving  Presidents of All Time 1. Teodoro Obiang – 46 years – Equatorial Guinea  2. Paul Biya – 43  -Cameroon 3. Omar Bongo – 42  – Gabon 4. Muammar Gaddafi – 42 – Libya  5. Denis Sassou Nguesso – 41  – Congo  6. Yoweri Museveni – 39 – Uganda  […] The post Africa’s Longest Serving  Presidents of All Time first appeared on The Zambian Observer .