Non Sombun (Thai: โนนสมบูรณ์) is a sub-district (tambon) in Mueang Bueng Kan District, Bueng Kan Province, far northeastern Thailand.

[1] It lies on Thailand Route 222, south of Bueng Kan.

The deep undulation on the east side has a marshy area in the middle.

[4] The administration of ฺNon Sombun subdistrict (tambon) is responsible for an area that covers 63.0 square kilometres (24.3 sq mi) and consists of thirteen administrative villages (muban).

Non Sombun subdistrict is home to the following active temples, where Theravada Buddhism is practised by local residents:[5]