Coobowie Aquatic Reserve is a marine protected area in the Australian state of South Australia located in the waters of Gulf St Vincent adjoining the east coast of Yorke Peninsula. It is located partly within the locality of Coobowie and partly within a bay called Salt Creek Bay within the gulf. Since 2012, it has been located within the boundaries of the Lower Yorke Peninsula Marine Park with ‘Area 1’ being within a “general managed use zone” and ‘Area 2’ being within a “sanctuary zone.” The aquatic reserve is classified as an IUCN Category VI protected area.