The Cayo District is a district in the west of the nation of Belize. The District capital is the town of San Ignacio Cayo. Also in the Cayo District are the Belizian national capital of Belmopan, the town of Benque Viejo del Carmen, the villages of San Antonio Cayo Valley of Peace, St. Margret's, Roaring Creek, Albaina, and Spanish Lookout. Cayo District also contains the Pre-Columbian Maya ruins of Xunantunich, Cahal Pech, and Caracol.
The Cayo District is primarily an agricultural district, with the chief crops being citrus, (oranges, grapefruit, and tangerine), as well as bananas. There are 2 major highways in the District. The Western Highway, which runs from Belize City to the Guatemalan border. And the Hummingbird Highway which starts in Belmopan and ends at the juncture of the Dangreia Hwy and The Southern Highway in the Stann Creek District. In addition to the ruins listed above there are several other tourist attractions including 2 National Parks, Blue Hole (park) and Gunivista.
According to the 2000 census, Cayo District had a population of 53,715 people.