The Belfast Coastal Reserve covers an area that lies on the coastal fringe between the outskirts to the East of Port Fairy and the western boundary of the City of Warrnambool, in the state of Victoria in Australia.

Belfast Coastal Reserve consists of areas of large natural dunes that contain significant areas of recovering coastal heath and other native vegetation as well as marram grass. The dunes are backed by intermittent and permanent swamps and wetlands. The beaches range from high energy open ocean, that can be subjected to large wave and high tide forces, to those that are protected by outer reefs.

Belfast Coastal Reserve provides a habitat for a range of native flora and fauna including water and migratory birds that also include endangered species like the Orange Bellied Parrot and Hooded Plover. Numerous migratory birds frequent these beaches. Swamp Wallabies and Echidnas can be seen around the dunes and at times dolphins and whales can be observed in the ocean from the vantage points. 

The area also holds cultural and spiritual significance for the Traditional Custodians of the area. One of the largest shell middens in the Southern half of Australia lies within the reserve, just to the West of the main beach. This was an important place of habitation for the Moonwer Gundidj, a local clan of the greater Peek Whurrong coastal tribe. Burial sites also lie within the Reserve.