Deloncle Bay (65°5′S 63°56′W / 65.083°S 63.933°W / -65.083; -63.933) is a bay, 1.5 nautical miles (3 km) long, indenting the northwest coast of Kyiv Peninsula in Graham Land between Loubat Point and Glandaz Point, and opening on Lemaire Channel opposite Booth Island. It was discovered by the Belgian Antarctic Expedition, 1897–99. Recharted by the French Antarctic Expedition, 1903–05, it was named by Jean-Baptiste Charcot for François Deloncle, a French diplomat.

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• SCAR Composite Gazetteer of Antarctica.

 This article incorporates public domain material from "Deloncle Bay". Geographic Names Information System. United States Geological Survey.