| Béchervaise Island | |
| Map: | Antarctica |
| Location: | Antarctica |
| Coordinates: | -67.5833°N 111°W |
| Archipelago: | Flat Islands |
| Population: | Uninhabited |
| Country: | None |
| Treaty System: | Antarctic Treaty System |
Béchervaise Island is the largest of the Flat Islands, located just west of Stinear Island in Holme Bay, Mac. Robertson Land. It is one of several plotted as a part of "Flatøy" ("Flat Island") by Norwegian cartographers from air photos taken by the 1936–37 Lars Christensen Expedition, but was found to be a separate island by the Australian National Antarctic Research Expeditions in 1954 and named for John Béchervaise, officer in charge at Mawson Station in 1955 and 1959.