Uthumphon Phisai is a district (amphoe) in the western part of Sisaket Province, northeastern Thailand. Neighbouring districts are (from the north clockwise): Rasi Salai, Mueang Sisaket, Wang Hin, Prang Ku, Huai Thap Than, Mueang Chan, Pho Si Suwan, and Bueng Bun.
The district dates back to Mueang Uthumphon Phisai, which was converted into a district in 1911, then named Phachim Sisaket. In 1913 it was renamed Uthomphon Phisai again. The district office was in Ban Samrong Yai, tambon Samrong.
The district is divided into 19 sub-districts (tambons), which are further subdivided into 232 villages (mubans). Kamphaeng is a township (thesaban tambon) which covers parts of tambon Kamphaeng. There are a further 19 tambon administrative organizations (TAO).

Source: https://en.wikipedia.org/wiki/Uthumphon_Phisai_District