Maranup is a rural locality of the Shire of Bridgetown–Greenbushes in the South West region of Western Australia. The Blackwood River passes through the locality from east to west and, in the south-western corner, Maranup is home to the what is the majority of Dalgarup National Park.

The Shire of Bridgetown–Greenbushes is located on the traditional land of the Bibulman (also spelled Bibbulmun or Pibelmen) and Wardandi (also spelled Wadandi) people, both of the Noongar nation.

Maranup Ford, in the centre of the locality, was the main crossing of the Blackwood River for traffic from Manjimup to the port of Bunbury until 1862, when a bridge over the river was built at Bridgetown. In 1898, the Browne family purchased land in the area as a freehold from the crown and built homestead near the ford in 1917. The property remains in the family today, functioning as a working farm and caravan park.