Tha Sala (Thai: ท่าศาลา, pronounced [tʰâː sǎː.lāː]) is a district (amphoe) of Nakhon Si Thammarat Province, southern Thailand.
Neighboring districts are (from the south clockwise): Mueang Nakhon Si Thammarat, Phrom Khiri, Nopphitam, and Sichon. To the east is the Gulf of Thailand.