This is a list of current monarchies. As of 2019, there are 44 sovereign states in the world with a monarch as Head of state. There are 13 in Asia, 12 in Europe, 10 in North America, 6 in Oceania and 3 in Africa.
These are the approximate categories which present monarchies fall into:
Absolute monarchs remain in the Nation of Brunei, the Abode of Peace; the Sultanate of Oman; the State of Qatar; and the Kingdom of Saudi Arabia. The Kingdom of Bahrain, and the State of Kuwait are classified as mixed, meaning there are representative bodies of some kind, but the monarch retains most of his powers. The Hashemite Kingdom of Jordan, Malaysia, the Kingdom of Morocco, and the United Arab Emirates are constitutional monarchies, but their monarchs still retain more substantial powers than in European equivalents.
- East and Southeast Asian constitutional monarchies. The Kingdom of Bhutan; the Kingdom of Cambodia; Japan; and the Kingdom of Thailand have constitutional monarchies where the monarch has a limited or ceremonial role. Thailand changed from traditional absolute monarchy into a constitutional one in 1932, while the Kingdom of Bhutan changed in 2008. The Kingdom of Cambodia had its own monarchy after independence from the French Colonial Empire, which was deposed after the Khmer Rouge came into power. The monarchy was subsequently restored in the peace agreement of 1993.
- Other monarchies. Five monarchies do not fit into one of the above groups by virtue of geography or class of monarchy: the Kingdom of Tonga in Polynesia; the Kingdom of Eswatini and the Kingdom of Lesotho in Southern Africa; and the Sovereign Military Order of Malta (S.M.O.M.), and the Vatican City State in Europe. Of these, the Kingdom of Lesotho and the Kingdom of Tonga are constitutional monarchies, while the Kingdom of Eswatini and the Vatican City State are absolute monarchies. The Kingdom of Eswatini is increasingly being considered a diarchy. The King, or Ngwenyama, rules alongside his mother, the Ndlovukati, as dual heads of state originally designed to be checks on political power. The Ngwenyama, however, is considered the administrative head of state, while the Ndlovukati is considered the spiritual and national head of state, a position which has become largely symbolic in recent years. S.M.O.M. is governed by an elected Prince and Grand Master. The Pope is the absolute monarch of the Vatican by virtue of his position as head of the Roman Catholic Church and Bishop of Rome; he is an elected rather than hereditary ruler. The Pope need not be a citizen of the territory prior to his election by the cardinals.
Some of the extant sovereign monarchies have lines of succession that go back to the medieval period or antiquity:
- The kings of Cambodia claim descent from Queen Soma (1st century), although the historiographical record is interrupted in the "Post-Angkor Period" (15th/16th centuries). A real unified kingdom of Cambodia first came to existence in 802. The monarchy in Cambodia was abolished between 1970 and 1993.
- There exist several suggestions on a possible line of succession in the Danish monarchy from the late 7th century and until Gorm the Old, but none of these suggestions have so far won universal acceptance. Most monarchs in Denmark since the 940s have been descendants of Gorm the Old's father Harthacnut and all monarchs in Denmark since 1047 have been descendants of titular Queen Estrid Svendsdatter. A formal law of succession was not adopted in Denmark until 1665.
- Japan, considered a constitutional monarchy under the Imperial House of Japan, is traditionally said to have originated with the mythical Emperor Jimmu. The first verifiable historiographical evidence begins with Emperor Kinmei in the 6th century.
- The monarchs of the kingdom of Norway by virtue of descent from Harald I Fairhair, who united the realm in 872. Harald as a member of the House of Yngling is given a partly legendary line of succession from earlier petty kings in historiographical tradition. Far from all monarchs of Norway since the 930s have been descendants of Harald Fairhair: at least seven or eight Norwegian kings from the period c. 970 – 1859 were not descendants of Harald Fairhair.
- The kings of Spain by descent from the Catholic Monarchs (via the House of Habsburg), ultimately combining the lines of succession of Castile and León and Aragon, realms established in the 10th to 11th centuries in the course of the Reconquista, via the Kingdom of Asturias claiming descent from the Visigothic Kingdom (which, originally ruled by the Thervingi kings, had become elective in the 6th century). The monarchy of Spain was abolished twice in the 19th and 20th centuries (1873-1874 and 1931–1947) and replaced by republics.
- The monarchs of the United Kingdom and Commonwealth realms inherit the throne by virtue of descent from Sophia of Hanover, according to the Act of Settlement 1701. Sophia was the granddaughter of James VI and I who inherited and held in union the kingdoms of England, Scotland and Ireland (Union of the Crowns) in 1603. Succession to the English throne originates with the House of Wessex, established in the 6th century; the Scottish throne with descent from Pictish kings who likewise enter the historical record around the 6th century.