Ivan Filippovich Vasiliev (Vasilyev, Vasil'ev) (1776 – July 1812) (referred to in some records as "Ivan Vasiliev the First") was a Russian explorer and navigator of the Imperial Russian Navy. He accompanied Leonty Andrianovich Hagemeister (1780–1833) on ship Neva to explore the coasts of Alaska and the North Pacific in 1806. Vasiliev explored the Alexander Archipelago and the many coastal Islands in the area. In 1809 he surveyed the western shore of Baranof Island.