  O'Reilly Island | |
| Geography | |
|---|---|
| Location | Queen Maud Gulf[1] |
| Coordinates | 68°02′13″N 98°58′53″W / 68.03694°N 98.98139°W |
| Archipelago | Arctic Archipelago |
| Area | 34.6 km2 (13.4 sq mi) |
| Administration | |
Canada | |
| Territory | Nunavut |
O'Reilly Island is an uninhabited island in Nunavut Territory, Canada.[1] It lies to the south of King William Island and to the west of the Klutschak and Adelaide Peninsulas, in the easternmost part of the Queen Maud Gulf.