Whyalla-Cowleds Landing Aquatic Reserve is a marine protected area in the Australian state of South Australia located in the waters of Spencer Gulf adjoining the east coast of Eyre Peninsula.

[3][4] It was declared in 1984 to protect "the mangrove-seagrass communities and associated fish nursery areas".

[3] Since 2012, it has been located within the boundaries of a 'sanctuary zone' in the Upper Spencer Gulf Marine Park.

[5] The aquatic reserve is classified as an IUCN Category II protected area.

[2] This South Australia protected areas related article is a stub.