Oligarch (Kingdom of Hungary)

An oligarch or provincial lord (tartományúr) was a powerful lord who administered huge contiguous territories through usurping royal prerogatives in the Kingdom of Hungary in the late 13th and the early 14th centuries. The term petty king used to be used as well.

Interregnum (1301–1310)

 * Amadeus Aba (Northeast Hungary)
 * Stephen Ákos (Borsod)
 * Stephen Babonić (Lower Slavonia)
 * James Borsa (Transtisia)
 * Matthew Csák (Northwest Hungary)
 * Ugrin Csák (Upper Syrmia)
 * Dujam Frankopan (Primorje)
 * Ladislaus Kán (Transylvania)
 * Henry Kőszegi (Southern Transdanubia and Upper Slavonia)
 * Ivan Kőszegi (Western Transdanubia)
 * Stephen Dragutin Nemanjić (Lower Syrmia)
 * Nicholas Pok (Szamosköz)
 * Dominic Rátót (Nógrád)
 * Paul Šubić (Croatia and Bosnia)
 * Theodore Vejtehi (Severin)