Pa Sak (Thai: ป่าสัก) is a tambon (subdistrict) of Wang Chin District, in Phrae Province, Thailand.

[1] The subdistrict was created effective November 5, 1990 by splitting off 5 administrative villages from Soi.

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

The whole area of the subdistrict is covered by the subdistrict administrative organization (SAO) Pa Sak (องค์การบริหารส่วนตำบลป่าสัก).

This Phrae Province location article is a stub.