Grey River is a rural locality in the Shire of Colac Otway, Victoria, Australia. It lies on the Great Ocean Road at the mouth of the Grey River, from which it derives its name. Grey River Beach is located in the area, and contains car parking and picnic facilities. Surf Life Saving Australia notes that the beach "is often more boulder than sand" and "unsuitable for safe bathing, apart from in the protected tidal pools at high tide." The coastline in this area is commonly used for rock fishing.