List of longest-ruling non-royal national leaders since 1900 Name Country Term began Term ended Term length Fidel Castro Cuba 1959 2011 52 years, 62 days Kim Il-sung North Korea 1948 1994 45 years, 302 days Yumjaagiin Tsedenbal Mongolia 1940 1984 44 years, 137 days Omar Bongo Gabon 1967 2009 41 years, 155 days Enver Hoxha Albania 1944 1985 40 years, 171 days Paul Biya Cameroon 1975 present 39 years, 289 days Mohamed Abdelaziz Sahrawi Arab Democratic Republic 1976 present 38 years, 228 days Gnassingbé Eyadéma Togo 1967 2005 37 years, 297 days Francisco Franco Spain 1938 1975 37 years, 294 days Josip Broz Tito Yugoslavia 1943 1980 36 years, 157 days