Ubolratana district
Ubolratana (Thai: อุบลรัตน์, RTGS: Ubonrat, pronounced [ʔùʔ.bōn.rát]; Northeastern Thai: อุบลรัตน์, pronounced [ʔǔʔ.bòn.làt]) is a district (amphoe) of Khon Kaen province, northeastern Thailand. The district is named after Princess Ubol Ratana, the eldest child of King Bhumibol Adulyadej.