The small dolmen Fastmårupsdösen is located northeast of the Råån valley, between Gantofta and Vallåkra in the field, west of Fastmårupvägen, near Helsingborg in Skåne in Sweden.
The dolmen lies in a tightly plowed, 0.5 m high hill of about 4.0 × 3.0 m. The northeast-southwest oriented rectangular chamber measures about 2.0 × 1.0 m and is 1.0 m high. It consists of five 0.8 to 1.5 m high, 0.9 to 1.3 m wide and 0.3 to 1.0 m thick supporting stones. Two of the stones are tilted. The capstone, resting on three supporting stones, measures around 3.0 × 2.0 m and is around 1.0 m thick.
The passage grave Örenäsgånggriften is nearby.