Phibun Rak (Thai: พิบูลย์รักษ์, pronounced [pʰí.būːn rák]) is a district (amphoe) in central Udon Thani province, northeastern Thailand.

Neighboring districts are (from the north clockwise) Nong Han, Chai Wan, Si That, Kumphawapi, and Prachaksinlapakhom.

[2] The district is divided into three sub-districts (tambons), which are further subdivided into 37 villages (mubans).

There are no municipal (thesaban) areas, and three tambon administrative organizations (TAO).

This Udon Thani Province location article is a stub.