Ilya Perfilyev (Perfiryev) (Russian: Илья Перфильев (Перфирьев)) (1583–1659), was a Russian explorer, polar seafarer and a founder of Verkhoyansk.
In the summer of 1633 he headed a group, consisted of merchant-and-industrial people and Yenisey and Tobolsk Cossacks.
In 1634 he discovered the Yana River and the Yana-Indigirka Lowland.
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