Uparaja

Uparaja or Ouparath, also Ouparaja (Burmese: ဥပရာဇာ [ṵpəjàzà]; Khmer: ឧបរាជ, UNGEGN: Ŏbâréach, ALA-LC: Uparāj [ʔoparaːc]; Thai: อุปราช, RTGSUpparat; Lao: ອຸປຮາດ, Oupahat), is a noble title reserved for the viceroy in India and the Buddhist dynasties in Burma, Cambodia, Laos and Thailand, as well as some of their minor tributary kingdoms.