Ilak Island is a small island

Island

An island or isle is any piece of sub-continental land that is surrounded by water. Very small islands such as emergent land features on atolls can be called islets, cays or keys. An island in a river or lake may be called an eyot , or holm...

 in the eastern Delarof Islands

Delarof Islands

The Delarof Islands are a group of small islands at the extreme western end of the Andreanof Islands group in the central Aleutian Islands, Alaska...

, Aleutian Islands of Alaska

Alaska

Alaska is the largest state in the United States by area. It is situated in the northwest extremity of the North American continent, with Canada to the east, the Arctic Ocean to the north, and the Pacific Ocean to the west and south, with Russia further west across the Bering Strait...

.

Ilak island is only 0.99 miles (1.6 km) across. Its highest point is 190 feet (57.9 m).

Its name was recorded by Commodore Joseph Billings

Joseph Billings

Joseph Billings was an English navigator and explorer who spent the most significant part of his life in Russian service.In 1785, the Russian government of Catherine II commissioned a new expedition in search for the Northeast Passage, led by English officer Joseph Billings, who had previously...

 as "Illuk," and published by Lt. Sarichev (1826, map 3) of the Imperial Russian Navy

Imperial Russian Navy

The Imperial Russian Navy refers to the Tsarist fleets prior to the February Revolution.-First Romanovs:Under Tsar Mikhail Feodorovich, construction of the first three-masted ship, actually built within Russia, was completed in 1636. It was built in Balakhna by Danish shipbuilders from Holstein...

, as "Illakh." The adopted form "Ilak" was published in the 1946 supplement to the 1944 Aleutian Coast Pilot (U. S. Coast and Geodetic Survey, 1946, p. 120).
Ilak Island figures prominently in Gore Vidal's novel, Williwaw, when an army transport ship takes refuge from a storm in its bay