Nghi Sơn is a district-level town (thị xã) of Thanh Hóa province in the North Central Coast region of Vietnam.

Nghi Sơn was formerly Tĩnh Gia District, a rural district of Thanh Hóa Province, with its district capital lying at Tĩnh Gia township.

On April 22, 2020, Tĩnh Gia District was dissolved to form the new district-level town of Nghi Sơn.

The town seat lies at Hải Hòa (former Tĩnh Gia township).

This article about a location in Thanh Hóa Province, Vietnam is a stub.