The Rush Creek, a perennial stream of the Hawkesbury-Nepean catchment, is located in the Outer Metropolitan Sydney region of New South Wales, Australia.
The Rush Creek (officially designated as a river) rises about south-east of the Parr Spur Ridge Trigonometry Station, near Mile Ridge and east of the Putty Road. The river flows generally north-east by east before reaching its confluence with Webbs Creek in remote country within the Parr State Conservation Area, south-west of . The river descends over its course.