| Warren Island | |
| Location: | Pacific Ocean |
| Pushpin Map: | Alaska |
| Coordinates: | 55.8928°N -133.8928°W |
| Archipelago: | Alexander Archipelago |
| Area Sqmi: | 18.22 |
| Elevation Ft: | 1591 |
| Country: | United States |
| Country Admin Divisions Title: | State |
| Country Admin Divisions: | Alaska |
| Country Admin Divisions Title 1: | Census area |
| Country Admin Divisions 1: | Prince of Wales-Hyder |
Warren Island is an island in the Alexander Archipelago of southeastern Alaska, United States. It lies on the Pacific coast just southwest of the community of Edna Bay (on Kosciusko Island). Directly west is Coronation Island and directly north is Kuiu Island. Warren Island has a land area of 47.191 km2 (18.22 sq mi) and no permanent resident population.[1] The entire island has been designated as the Warren Island Wilderness, a part of Tongass National Forest.