Ron Phibun (Thai: อำเภอร่อนพิบูลย์, pronounced [rɔ̂n pʰí(ʔ).būːn]) Ron Phibun or Ronphibun is a district (amphoe) in the southern part of Nakhon Si Thammarat province, southern Thailand.

[2][3] Neighboring districts are (from the west clockwise): Thung Song, Lan Saka, Phra Phrom, Chaloem Phra Kiat, Cha-uat, and Chulabhorn of Nakhon Si Thammarat province.

The district is divided into six sub-districts (tambons), which are further subdivided into 61 villages (mubans).

Ron Phibun and Hin Tok both covers parts of the same-named tambons, and Khao Chum Thong covers the whole tambon Khuan Koei.

This Nakhon Si Thammarat Province location article is a stub.