These are lists of incumbents (individuals holding offices or positions), including heads of states or of subnational entities.
A historical discipline, archontology, focuses on the study of past and current office holders.
Incumbents may also be found in the countries' articles (main article and "Politics of") and the list of national leaders, recent changes in 2020 in politics and government, and past leaders on State leaders by year and Colonial governors by year.
Various articles group lists by title, function or topic: e.g. abdication, assassinated persons, cabinet (government), chancellor, ex-monarchs (20th century), head of government, head of state, lieutenant governor, mayor, military commanders, minister (and ministers by portfolio below), order of precedence, peerage, president, prime minister, Reichstag participants (1792), secretary of state.
Diarchy, duarchy, or duumvirate is a form of government characterized by corule, with two people ruling a polity together either lawfully or de facto, by collusion and force. The leaders of such a system are usually known as corulers.
The Mossi Kingdoms, sometimes referred to as the Mossi Empire, were a group of powerful kingdoms in modern-day Burkina Faso which dominated the region of the upper Volta river for hundreds of years. The largest Mossi kingdoms was that of Ouagadougou and the king of Ouagadougou known as the Mogho Naaba, or King of All the World, serves as the Emperor of all the Mossi. The first kingdom was founded when Dagomba warriors from the region that is present-day Ghana and Mandé warriors moved into the area and intermarried with local people. Centralization of the political and military powers of the kingdoms begin in the 13th century and led to conflicts between the Mossi kingdoms and many of the other powerful states in the region. In 1896, the French took over the kingdoms and created the French Upper Volta which largely used the Mossi administrative structure for many decades in governing the colony.