Non Sombun (Thai: โนนสมบูรณ์, pronounced [nōːn sǒm.būːn]) is a tambon (subdistrict) of Ban Haet District, Khon Kaen Province, northeast Thailand (Isan).

In 1995, the king amphoe (กิ่งอำเภอ, "minor district") Ban Haet was established.

So Non Sombun moved up directly to the newly established minor district.

[1] Non Sombun is the north part of the district, about 10 km (6.2 mi) from downtown Ban Haet.

Its geography is a lowland alternating with some parts of the upland and some are the Chi river basins.