Leominster State Forest is a publicly owned forest with recreational features covering 4,246 acres (1,718 ha) in the Massachusetts towns of Leominster, Fitchburg, Princeton, Sterling, and Westminster.

The state forest encompasses an extensive trail system, numerous small ponds, and the Crow Hills.

Artifacts in the forest include cellar holes, stonewalls, fruit trees and other remnants of Notown, an unincorporated 18th-century settlement that was annexed into adjoining municipalities in 1838.

[3][5] The state's first purchase at the site took place in 1922, with expansions seen in many following years including 2002.

[6] The Civilian Conservation Corps was active in the forest from 1932 to 1938, constructing a network of roads, working on the park headquarters, and developing the area at Crow Hill Pond.