.jpg) Cape Mudge Lighthouse on Quadra Island | |
 Quadra Island is located at the northern end of the Strait of Georgia | |
| Geography | |
|---|---|
| Location | Salish Sea |
| Coordinates | 50°10′N 125°14′W / 50.167°N 125.233°W |
| Archipelago | Discovery Islands |
| Area | 310 km2 (120 sq mi) |
| Highest elevation | 620 m (2030 ft) |
| Highest point | Mount Seymour |
| Administration | |
| Province | British Columbia |
| Regional district | Strathcona |
| Demographics | |
| Population | 2,472 (2006) |
| Ethnic groups | Laich-kwil-tach |
Quadra Island is a large island off the eastern coast of Vancouver Island, in British Columbia, Canada. It is part of the Discovery Islands, in the Strathcona Regional District.