Ahigh king is a king who holds a position of seniority over a group of other kings, without the title of emperor. Similar titles include great king and king of kings. The high kings of history usually ruled over lands of cultural unity; thus high kings differentiate from emperors who control culturally different lands, and feudal monarchs, where subordinates assume lesser positions. High kings can be chosen by lesser rulers through elections, or be put into power by force through conquest of weaker kingdoms.
In history and literature, high kings may be found where there is a high degree of cultural unity, along with sufficient political fragmentation that the high king's subordinates style themselves kings. In this respect, high kingships frequently differ from empires, which are culturally as well as politically heterogeneous, as well as from feudal monarchies, where the subordinate rulers take lesser titles (such as dukeorcount) and may be, at least in theory, subject to appointment and dismissal by the sovereign.
In this model, a high king might be chosen from among a group of kings in his personal capacity, for instance by election or on the basis of genealogical superiority. Alternatively, the high kingship might be attached to the kingship of one of the constituent kingdoms, either permanently or when one kingdom is able to assert supremacy over the others. The high king's authority over other kings is usually limited, and in some high
kingships his duties are largely ceremonial or restricted to occasions such as war that create a need for a unified command structure.
The Yang di-Pertuan Agong (literally "supreme lord") in Malaysia could probably be seen as a "high king", as he is elected from among nine Malay rulers of the states (seven sultans, a raja, and a Yang di-Pertuan Besar-literally "great lord") by the Conference of Rulers (through informal agreement, on a rotational basis). In practice, however, the term "high king" is rarely applied to the Yang di-Pertuan Agong (king).
AdhirajaorAdiraja is the comparable term of high king in the Indian subcontinent. The maharaja and maharajadhiraja could possibly be rendered as "high king" since it was a result of title inflation which soon led to most being rather mediocre or even petty in real power, which led to compound titles (among other efforts) being used in an attempt to distinguish some among their ranks.
Taewang, meaning "greatest of kings", was used by the later rulers of the Korean kingdom of Koguryo (and Silla, albeit to a rarer extent) to rank themselves as equals to the Chinese emperors or to express suzerainty over surrounding states, particularly during the Three Kingdoms Era. Daewang (great king) was used by rulers of other kingdoms and subsequent dynasties, including Baekje, whose king assumed the style of Daewang Pyeha ("his imperial majesty the great king") by the reign of King Mu (600-640 AD at the latest). However, after the Mongol Invasions of Korea, these rulers remained technically subordinate to the Mongol Empire and later China until King Gojong declared the Korean Empire in 1897 and assumed the title of Hwangje, or "emperor" (the Korean rendition of the Chinese "huang di").
Originally, the rulers of Wa (倭), an ancient name of Japan, was known as the "Grand King of Yamato" (大和大王, Yamato-ōkimi) or the "Kings of Wa" (倭国王, Wakoku-ō) prior to the 7th century. It was later changed to become the Emperor of Japan (天皇, Tennō).
InC. S. Lewis's epic fantasy, The Chronicles of Narnia, Peter Pevensie was the High King of Narnia while his younger brother Edmund Pevensie was the King and his sisters Susan Pevensie and Lucy Pevensie were the Queens. He was also the high king over all kings of Narnia, from the first to the last. Aslan, the deity and the Great Lion of Narnia, is described as being "the High King above all High Kings", meaning he is the highest king over all rulers of Narnia.
InJ. R. R. Tolkien's works, mainly The Silmarillion, there was a succession of high kings of the Noldor exiled in Middle-earth, beginning with Fingolfin and culminating in Gil-galad's reign. Ingwë, leader of the Vanyar, is also called the High King of the Eldar, while Manwë is also sometimes titled High King of Arda. Thingol is acknowledged as high-king of Beleriand by Fingolfin. In the Third Age, the rulers of Arnor were known as "high kings", including Aragorn, as King Elessar, ruling the reunited kingdoms of Gondor and Arnor at the beginning of the Fourth Age.
InLloyd Alexander's Chronicles of Prydain, there is a line of High Kings of Prydain (a fictionalized version of Wales) who are descendants of a royal family who came from the Summer Country in order to oppose Arawn. The high king throughout the series is Gwydion's father Math, who is then succeeded by Gwydion and later Taran in the final novel of the series, The High King.
InBethesda Softworks' The Elder Scrolls, the high king is the highest authority in the Province of Skyrim and theoretically the high king of Alinor is also the highest authority of the Summerset Isle (later renamed Alinor).
InBlizzard Entertainment's Warcraft, the high king is the leader of the Alliance who has military control over the Alliance forces.
In Holly Black's The Folk of the Air series, there is a high king who rules over the land of faeries, Elfhame.
