Anna Maria Island, is a barrier island on the coast of Manatee County, Florida, in the United States. It is bounded on the west by the Gulf of Mexico, on the south by Longboat Pass, on the east by Anna Maria Sound, and on the north by Tampa Bay. Anna Maria Island is approximately 7 miles (11 km) long north to south.

Longboat Key is a town in Manatee and Sarasota counties along the central west coast of the U.S. state of Florida, located on and coterminous with the barrier island of the same name. Longboat Key is south of Anna Maria Island, between Sarasota Bay and the Gulf of Mexico. It is almost equally divided between the Manatee and Sarasota counties. The town of Longboat Key was incorporated in 1955 and is part of the North Port-Bradenton-Sarasota, Florida Metropolitan Statistical Area. The town's population was 7,505 at the 2020 census, up from 6,888 at the 2010 census.