| Position/Days in Power | Name of Leader | Period in Office |
| Kenya (President - 8,896 days) | |
| North Korea (Supreme Leader - 16,769 days) | |
| Libya (Head of State - 15,389 days) | |
| Mexico (President - 9,860 days) | |
| Netherlands (Monarch - 21,104 days) | |
| Pakistan (President - 3,802 days) | |
| Philippines (President - 7,362 days) | |
| Portugal (King - 17,936 days) | |
| Portugal (Prime Minister - 13,231 days) | |
| Romania (President 5,748 days) | |
| Russia (President - 3,050 days) | |
| Russia (Tsar/Monarch - 18,368 days) | |
| South Africa (President - 3,388 days) | |
| Spain (Prime Minister/Head of Government - 12,912 days) | |
| Syria (President - 10,701 days) | |
| Turkey (President - 5,491 days) | |
| Uganda (President - 3,429 days) | |
| United Kingdom (Monarch - 23,226 days) | |
| United Kingdom (Prime Minister - 7,618 days) | |
| United States (President - 4,422 days) | |
| Vatican City (Pope - 11,559 days) | |
| Vietnam (President - 8,766 days) | |
| Zimbabwe (President - 8,767 days ay 1 January 2012) | |
| Argentina (President - 3,656 days) | |
| Australia (Prime Minister - 4,284 days) | |
| Belgium (Monarch - 15,355 days) | |
| Brazil (President - 2,922 days) | |
| Brazil (President - 2,922 days) | |
| Brazil (Emperor - 3,099 days) | |
| Canada (Prime Minister - 6,934 days) | |
| China (Paramount Leader - 5.043 days) | |
| Egypt (President - 5,787 days) | |
| France (King - 21,425 days) | |
| France (President - 4,382 days) | |
| France (First Consul - 1,650 days; Emperor - 4,030 days = 5,680 as Head of State) | |
| Germany (Chancellor - 5,866 days) | |
| Germany (Chancellor - 5,134 days) | |
| Germany (Chancellor - 4,473 days) | |
| Haiti (President - 4,929 days) | |
| India (Prime Minister - 5,829 days) | |
| Indonesia (President - 7,886 days) | |
| Italy (Prime Minister - 3,156 days) | |
| Kenya (President - 5,000 days) | |
| North Korea (Supreme Leader - 6,371 days) | |
| Mexico (President - 1,926 days) | |
| Netherlands (Monarch - 18,226 days) | |
| Pakistan (President - 3,653 days) | |
| Portugal (King - 16,936 days) | |
| Russia (President - 2,928 days) | |
| Russia (Tsar/Monarch - 18,368 days) | |
| Russia (Tsar/Monarch - 18,368 days) | |
| South Africa (President 1,863 days) | |
| Syria (President - 4,336 days at 1 January 2012) | |
| Uganda (President - 2,998 days) | |
| United Kingdon ( Monarch - 21,887 days) | |
| United Kingdon ( Monarch - 21,879 days at I January 2012) | |
| United Kingdom (Prime Minister - 6,294 days) | |
| United Kingdom (Prime Minister - 4,508 days) | |
| United Kingdom (Prime Minister - 3,162 days) | |
| United Kingdom (Prime Minister - 4,226 days) | |
| United Kingdon (Prime Minister - 3,708 days) | |
| Vatican City (Pope - 9,665 days) | |
| Zimbabwe (President - 2,813 days) | |