Vladimir Vasilyevich Atlasov or Otlasov (Russian: Влади́мир Васи́льевич Атла́сов or Отла́сов; between 1661 and 1664 – 1711) was a Siberian Cossack who was the first Russian to organize systematic exploration of the Kamchatka Peninsula. Atlasov Island, an uninhabited volcanic island off the southern tip of Kamchatka, and the Atlasova volcano are named after him.