Mitchells Creek is a creek in central New South Wales, Australia. Rising north-east of Wellington, New South Wales, Mitchells Creek flows generally northward and joins the Talbragar River about 5 km south-west of Ballimore. The direct distance from its source to its outlet is 31 kilometres, longer via the twists and turns of the watercourse.
There is usually no water in the creek. The broad valley through which the creek runs is used for growing wheat. The non-existent localities of Comobella, Windorah and Westella lie within the valley, which has no extant towns or villages. The Golden Highway crosses Mitchell's Creek immediately adjacent to where it merges into the Talbragar River.