Marrinup Townsite Camping Area is a simple, open grassed campground set on the site of an old town in Marrinup State Forest, approximately 5 kilometres north-west of Dwellingup, Western Australia.

The site is accessible by 2WD vehicles, though road conditions can vary. It operates on a first-come, first-served basis with no bookings required. Facilities are basic, including camp toilet facilities and picnic tables.

Campfires are generally permitted in fire rings between April 15 and November 30, subject to fire restrictions. Visitors must bring their own drinking water, as none is available on site. Dogs are permitted but must remain on a leash at all times.

The surrounding area offers walking trails, including a route to the old prisoner of war camp site. Winter and spring are considered the best seasons to visit. Camping fees apply per person per night.