Mueang Sisaket is the capital district (amphoe mueang) of Sisaket Province, northeastern Thailand. The Thai honorific si is derived from the Sanskrit title of veneration sri. Sisaket is sometimes transliterated as Srisaket, Sri Saket, Si Saket or Si Sa Ket.
The district was renamed from Klang Si Sa Ket to Mueang Sisaket in 1913. In 1917 mueang was removed from the name, which was added again in 1938.
Neighbouring districts are (from the north clockwise): Yang Chum Noi, Kanthararom, Nam Kliang, Phayu, Wang Hin, Uthumphon Phisai and Rasi Salai.
The district is divided into 18 sub-districts (tambons), which are further subdivided into 166 villages (mubans). The town (thesaban mueang) Sisaket covers tambons Mueang Nuea and Mueang Tai and parts of tambon Nong Khrok, Phon Kha, Ya Plong, and Pho. Nam Kham is a subdistrict municipality (thesaban tambon) which covers the whole same-named subdistrict. There are a further 15 tambon administrative organizations (TAO).

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