Ruler
person who reigns over a certain region or country
usurper
Wang
tribal chief
Lord
governor
feudatory
Grand Prince
hegemon
Nawab of Bhopal
emir
colonial administrator
tyrant
Shah
queen regnant
philosopher king
Grand Chief
sovereign
viceroy
aristocrat
Prince of Chernigov
Thakur
Stadtholder
count
pharaoh
Oba
chieftain
regent
regent
Koi
Royal Governor of Chile
Governor of Makkah Region
Oba of Lagos
Imperator
despot
Grand Prince of the Hungarians
EN
Mir of Hunza
Caudillo