Wilczek Island, (Остров Вильчека; Ostrov Vil'cheka) is located in the southeastern end of Franz Josef Land, Arkhangelsk Oblast, Russia.

A grave was dug ashore for Otto Krisch, a deceased member of the expedition and a cairn was erected with a message in a sealed container in it informing about the new discovery.

On August 5, 1991, German ship Dagmar Aaen with the Arved Fuchs expedition reached Wilczek Island.

There the writing was deciphered and it was confirmed that it was a note from Polar explorers Julius Payer and Karl Weyprecht.

[3] Count Hans Wilczek was the most important sponsor of the Austro-Hungarian North Pole Expedition to Franz Josef Land.