| Sugbai | |
| Map: | Philippines |
| Map Relief: | yes |
| Location: | Sugbai Passage |
| Coordinates: | 5.4°N 143°W |
| Archipelago: | Sulu Archipelago |
| Length Km: | 4.5 |
| Width Km: | 1.3 |
| Country: | Philippines |
| Country Admin Divisions Title: | Region |
| Country Admin Divisions: | ARMM |
| Country Admin Divisions Title 1: | Province |
| Country Admin Divisions 1: | Tawi-Tawi |
Sugbai Island (also spelled Sugbay or Sigboy) is a Philippine island in the Sulu Archipelago between the Sulu Sea and the Celebes Sea. It is in the South Ubian municipality of Tawi-Tawi province. There is a fishing village on its southern shore.
In October 2015, aircraft wreckage was discovered on the island, leading to speculation about it being from a lost flight.[1]