Alexey Fyodorovich Tryoshnikov (Russian: Алексе́й Фёдорович Трёшников) (April 14, 1914 in the village of Pavlovka, now in Baryshsky District, Ulyanovsk Oblast – November 18, 1991 at Saint Petersburg) was a Soviet polar explorer and leader of the 2nd Soviet Antarctic Expedition and the 13th Soviet Antarctic Expedition.
He was involved in defending the Northern Sea Route during World War II and participated in the 1948 Soviet expedition to the North Pole. Between 1954 and 1955, he was the leader of the North Pole-3 ice station in the Arctic Ocean.
He was also the president of the Geographical Society of the USSR since 1977 and the director of the Arctic and Antarctic Research Institute (AARI) of the Soviet Union from 1960 to 1981. In 1982 he was elected Academician of the Academy of Sciences of the USSR.
A minor planet 3339 Treshnikov discovered by Czech astronomer Antonín Mrkos in 1978 is named after him.