| Wonsey Rock | |
| Map: | Antarctica |
| Coordinates: | -66.2167°N 146°W |
| Archipelago: | Swain Islands |
| Population: | Uninhabited |
| Country: | None |
| Treaty System: | Antarctic Treaty System |
Wonsey Rock is a small rock north of Cameron Island in the Swain Islands. This region was photographed by U.S. Navy Operation Highjump (1946–47), ANARE (Australian National Antarctic Research Expeditions) (1956), and the Soviet expedition (1956). It was included in a 1957 survey of the islands north of Wilkes Station by C.R. Eklund. He named the rock for construction mechanic Duane J. Wonsey, U.S. Navy, of the Wilkes Station party, 1957.