| Lucas Island | |
| Map: | Antarctica |
| Location: | Antarctica |
| Coordinates: | -68.5°N 134°W |
| Length Km: | 0.6 |
| Width Km: | 0.2 |
| Elevation M: | 40 |
| Population: | Uninhabited |
| Country: | None |
| Treaty System: | Antarctic Treaty System |
Lucas Island is a small island lying just west of the Vestfold Hills, Antarctica, 20NaN0 north-west of Plog Island. It was mapped by Norwegian cartographers from air photos taken by the Lars Christensen Expedition (1936–37) and called "Plogsteinen" (the plow stone). It was mapped by the Australian National Antarctic Research Expeditions in 1958 and renamed for W.C. Lucas, a diesel mechanic at Davis Station, 1957.
A 9 ha site comprising the whole island has also been designated an Important Bird Area (IBA) by BirdLife International because it supports about 14,000 breeding pairs of Adélie penguins.[1]