The Crookwell River is a perennial river that is part of the Lachlan catchment within the Murray–Darling basin, located in the Southern Tablelands and South West Slopes regions of New South Wales, Australia. Sourced by runoff from the western slopes of the Great Dividing Range, the river rises south of and flows generally northwest by west, joined by one minor tributary, before reaching its confluence with the Lachlan River northwest of Binda and east of Frogmore. The river descends 461 m over its 78 km course.

Etymology

The river was originally named "Crook-ell" by William Stephenson, who originated from Crookhall, Durham, England.

Native fish fauna

Large Murray cod and endangered Macquarie perch, amongst other native fish, once abounded in the Crookwell, virtually to the base of Crookwell township: