Dequey
| Geography | |
|---|---|
| Location | Luzon Strait | 
| Coordinates | 20°19′59″N 121°47′7″E / 20.33306°N 121.78528°E | 
| Archipelago | Batanes Group of Islands | 
| Adjacent to | Balintang Channel | 
| Administration | |
| Region | Cagayan Valley | 
| Province | Batanes | 
| Additional information | |
Dequey is part of the Batanes Islands, the northernmost archipelagic province of the Philippines. The island is a small low-lying feature located about 1/2 mile west of the northwest point of Ivuhos Island. Dequey Island is uninhabited.
An unnamed active submarine volcano rising to within 24 metres (79 ft) of the sea surface is located 3 kilometres (1.9 mi) due west of Dequey Island.