Cockle Bay is a small bay in the south-western corner of Magnetic Island. It lies on the western side of Nobby Head, a headland which juts out at the southernmost end of the island. The bay is populated with a number of small residential premises. Access to the bay is gained via an unsealed road which leads through the mangrove flats to the north of Cockle Bay to West Point Road, which in-turn connects to Picnic Bay and West Point.