The Gulf of Mexico, the Straits of Florida, and the Atlantic Ocean border Florida.
Florida . It is bordered to the west by the Gulf of Mexico , to the north by Alabama and Georgia , to the east by the Atlantic Ocean , and to the south by the Straits of Florida and Cuba . A peninsula between the Gulf of Mexico , the Atlantic Ocean , and the Straits of Florida , it has the longest coastline in the contiguous United States , approximately 1350 mi , and is the only state that borders both the Gulf of Mexico and the Atlantic Ocean .