Darbel Bay () is a bay 25 miles (40 km) wide, indenting the west coast of Graham Land between Cape Bellue and Cape Rey. It was discovered and roughly charted by the French Antarctic Expedition, 1908–10, under Jean-Baptiste Charcot, who gave it the name Baie Marin Darbel. The bay was further charted in 1931 by Discovery Investigations personnel on the Discovery II, and by the British Graham Land Expedition, 1934–37, under Rymill.