What is the only Caribbean island with large oil reserves?

The only Caribbean island with large oil reserves is Trinidad and Tobago. In January 2013, the two-island state's estimated number of barrels of proved crude oil reserves was 728.3 million, as reported by the Central Intelligence Agency.

The island country of Trinidad and Tobago is situated in the northeastern Venezuelan coast in the Caribbean Sea. The majority of its population is of African and East Indian origin. The country's major industries include chemical and food processing, petroleum and tourism. Aside from a substantial stock of oil, Trinidad and Tobago is also rich in natural gas. Other nations in the Caribbean with oil reserves are Cuba and Barbados.