 Det Udom District

Det Udom () is a district ("amphoe") in the southern part of Ubon Ratchathani Province, northeastern Thailand.Neighboring districts are (from the northwest clockwise) Samrong, Warin Chamrap, Na Yia, Phibun Mangsahan, Buntharik, Na Chaluai, Nam Yuen, Nam Khun, Thung Si Udom of Ubon Ratchathani Province and Benchalak of Sisaket Province

The district is divided into 16 sub-districts ("tambons"), which are further subdivided into 229 villages ("mubans").