North Captiva Island is an island in Lee County in Southwest Florida, located just offshore in the Gulf of Mexico. It lies just north of Captiva Island, separated by a channel called Redfish Pass which was created in a 1921 hurricane. It lies just south of Cayo Costa Island, separated by Captiva Pass. Like Captiva and Sanibel Islands, North Captiva is a barrier island to Pine Island, and is very narrow.