Lan Saka (Thai: ลานสกา, pronounced [lāːn sā.kāː]) is a district (amphoe) of Nakhon Si Thammarat province, southern Thailand.

[1] Neighboring districts are (from the north clockwise): Phrom Khiri, Mueang Nakhon Si Thammarat, Phra Phrom, Ron Phibun, Thung Song, Chang Klang, Chawang and Phipun.

Khao Luang National Park is in Lan Saka District.

The district is divided into five sub-districts (tambons), which are further subdivided into 42 villages (mubans).

This Nakhon Si Thammarat Province location article is a stub.