Phu Phiang (Thai: ภูเพียง, pronounced [pʰūː pʰīaŋ]; Northern Thai: ภูเปียง, pronounced [pʰūː pīaŋ]) is a district (amphoe) in the central part of Nan province, northern Thailand.

Neighboring districts are (from the north clockwise) Santi Suk, Mae Charim, Wiang Sa, and Mueang Nan of Nan Province.

The eastern part of the district is in the Luang Prabang Range mountain area of the Thai highlands.

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

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