Chulabhorn (Thai: จุฬาภรณ์) is a district (amphoe) of Nakhon Si Thammarat province, southern Thailand.

The district was named in honour of Princess Chulabhorn, the youngest daughter of King Bhumibol Adulyadej, on her 36th birthday.

[1] Neighboring districts are (from the north clockwise): Ron Phibun, Cha-uat, and Thung Song.

Chulabhorn is divided into six sub-districts (tambons), which are further subdivided into 30 administrative villages (mubans).

There are five sub-district administrative organizations (SAO) in the district: This Nakhon Si Thammarat Province location article is a stub.