Aleksei Ilyich Chirikov (Russian: Алексей Ильич Чириков) (1703 – November 1748) was a Russian navigator and captain who along with Bering was the first Russian to reach North-West coast of North America. He discovered and charted some of the Aleutian Islands while he was deputy to Vitus Bering during the Great Northern Expedition.

In 1721, Chirikov graduated from the Naval Academy. In 1725–1730 and 1733–1743, he was Vitus Bering's deputy during the First and the Second Kamchatka expeditions.

In May 1741 Chirikov in the St Paul and Vitus Bering in the St Peter left Petropavlovsk-Kamchatsky and headed east. Some time after 20 June they were separated by a storm and never saw each other again. On 15 July 1741 Chirikov saw land at Baker Island off Prince of Wales Island at the south end of the Alaska Panhandle. This is about 450 miles southeast of Bering's landfall near Mount St. Elias at the north end of the panhandle. Unable to find a harbor he sailed north along Baranov Island past the later Russian base at Sitka. He sent out a longboat to find an anchorage. When it did not return after a week he sent out his second longboat which also failed to return. Now without any small boats Chirikov had no way of searching for the two longboats or landing on the coast to explore or replenish his supply of fresh water. After waiting as long as possible, he abandoned the longboats to their fate and on 27 July sailed west. He sighted the Kenai Peninsula, Kodiak Island and Adak Island near the western end of the Aleutians. With water critically low he reached Petropavlovsk on 12 October 1741.

Vitus Jonassen Bering (baptised 5 August 1681 in Horsens, Denmark – 8 December 1741 on Bering Island, Russia) was a Danish-born navigator in the service of the Russian Navy as (eventually Captain-Komandor) Витус Ионассен Беринг, known among the Russian sailors as Ivan Ivanovich Bering. He is known for his two explorations of the north-eastern coast of the Asian continent and from there the western coast on the North American continent. The Bering Strait, the Bering Sea, Bering Island, Bering Glacier and the Bering Land Bridge have since all been (posthumously) named in honour of the explorer.