Cagua Volcano is a stratovolcano located in the Philippine province of Cagayan.

Cagua is one of the active volcanoes in the Philippines located in the province of Cagayan in the Cagayan Valley Region of northern Luzon in the northernmost part of the Sierra Madre mountain range.

The volcano was covered by enormous lava flows from 600,000 to 300,000 years ago.

The volcano is topped by a 1.5-kilometer (1 mi) wide crater marked by sharp and precipitous walls.

Activity in 1860 was a largely phreatic eruption though it was possibly followed by a pyroclastic flow.