The Bight of Benin or Bay of Benin is a bight in the Gulf of Guinea area on the western African coast that derives its name from the historical Kingdom of Benin.

The Gulf of Guinea is the northeasternmost part of the tropical Atlantic Ocean from Cape Lopez in Gabon, north and west to Cape Palmas in Liberia. Null Island, defined as the intersection of the Equator and Prime Meridian, is in the gulf.