Bahia Honda is an island in the lower Florida Keys.
U.S. 1 crosses the key at approximately mile markers 36-38.5, between Ohio Key and Spanish Harbor Key 12 miles west of Marathon, close to the west end of the Seven Mile Bridge.
The island is virtually uninhabited, being home to the 524-acre Bahia Honda State Park. Founded in 1961, the park occupies most of the island. The channel at the island's west end is one of the deepest natural channels in the Florida Keys.