Jenny Island or Isla Juanita is a rocky island 3.7 km (2 nmi) long which rises to 500 m (1,600 ft), lying 5.6 km (3 nmi) east of Cape Alexandra, the southeastern extremity of Adelaide Island, in northern Marguerite Bay.

[1] The island was discovered by the French Antarctic Expedition (1908-1910) under Jean-Baptiste Charcot and named by him for the wife of Sub-Lieutenant Maurice Bongrain, French Navy, second officer of the expedition.

[2] Following he had made expeditions into nearby havens to find a wintering harbor but each time was forced to return to Jenny Island until eventually he moved on.

This article incorporates public domain material from "Jenny Island (Marguerite Bay)".

This Adelaide Island location article is a stub.