Thung Fai (Thai: ทุ่งฝาย) is a tambon (subdistrict) of Mueang Lampang District, in Lampang Province, Thailand.

In 2020 it had a total population of 7,697 people.

[1] The tambon is subdivided into 10 administrative villages (muban).

The whole area of the subdistrict is covered by the subdistrict administrative organization (SAO) Thung Fai (องค์การบริหารส่วนตำบลทุ่งฝาย).

This Lampang province location article is a stub.