1. Teodoro Obiang Nguema Mbasogo (Equatorial Guinea) – in power for 38 years, Longest serving presidents
President of Equatorial Guinea since August 1979. The man is 75 years old and shows no sign of letting go. Obiang staged a coup against the president, who happened to be his uncle, Francisco MacÃas Nguema. He took over office, accuse his uncle of various crimes and sentenced him to death 101 times. The uncle was executed by firing squad. Ruling by an iron fist and frustrating opposition in a country that has remained a one party state, he continues to hold on to power.
He is now the first longest-serving non-royal national leader in the world.