Buachet (Thai: บัวเชด, pronounced [būa̯.t͡ɕʰêːt]) is a district (amphoe) in the southeastern part of Surin province, northeastern Thailand.

The minor district (king amphoe) Buachet was created on 21 August 1978 when the three tambons, Buachet, Sadao, and Charat, were split off from Sangkha district.

[1] At first a temporary district office was established at the base of the Patrol Police group of the area.

Neighboring districts are (from the west clockwise) Sangkha of Surin Province, Khukhan, Phu Sing of Sisaket province, and Oddar Meancheay of Cambodia.

The district is divided into six sub-districts (tambons), which are further subdivided into 67 villages (mubans).