维京河（俄语：Витим）是勒拿河的主要支流。发源于贝加尔湖以东，全长1,978公里的维京河向北流经外贝加尔山脉及博代博（Бодайбо）镇。波岱波以下到与连斯克（Ленск）西面、勒拿河的会合处可通航。

著名的昆虫化石的出土地巴伊萨（Байса）位于河的左岸。

Vitim River (Russian and Buryat:Витим Vitim; Evenki:Витым Witym; Yakut:Виитим Viitim [local pronunciation]) is a major tributary of the Lena River. With its source east of Lake Baikal, the Vitim flows 1,978 kilometres (1,229 mi) north through the Transbaikal Mountains and the town of Bodaybo. The river peaks in June and freezes from November to May. It is navigable from the Lena to Bodaybo. Upstream, tugs can haul barges as far as the Baikal Amur Mainline (BAM), but this is becoming rare. Formerly, because of its swift current, goods were hauled 144 kilometres (89 mi) overland from Chita to a place called Romanovka. There boats were built, floated down the river, and broken up at their destination. This lasted until the late 1940s. The Vitim is an excellent place for adventure rafting, but is rarely visited because of its isolation.