Ben Halls Gap National Park, Nature reserve in Tamworth Regional Council, Australia.

Ben Halls Gap National Park is a nature reserve in New South Wales located where the Liverpool and Mount Royal Ranges meet. The landscape features old growth eucalypt forest with sections containing rare sphagnum moss mounds.

The reserve is named after Ben Hall senior, father of the bushranger Ben Hall, whose family settled in the Hunter Valley after emigrating from Europe. The land later became a national park in 1995 and was reclassified as a nature reserve in 2016.

The name recalls Ben Hall senior, father of the bushranger Ben Hall, whose family first settled in the Hunter Valley after emigrating from Europe. The park is closed to general visitors: entry is allowed only for scientific or educational purposes with permission from the national park administration.

The reserve lies roughly 60 kilometers southeast of Tamworth and about 10 kilometers from Nundle. Visitors should check with local authorities about access options and any guided tour opportunities available.

The park protects one of the largest stands of old-growth eucalypt forest in New South Wales that was never damaged by cattle grazing. It sits just west of the source of the Peel River on the Great Dividing Range, north of Gulph Mountain, and has no roads or visitor facilities. Entry is allowed only for scientific or educational purposes, with permission from the national park authority.