The Vitim (Russian: Витим; Evenki: Витым, Witym) is a major tributary of the Lena. Its source is east of Lake Baikal, at the confluence of rivers Vitimkan from the west and China from the east. The Vitim flows first south, bends eastwards and then northward in the Vitim Plateau. Then it flows north through the Stanovoy Highlands and the town of Bodaybo. Including river Vitimkan, its western source, it is 1,978 kilometres long, and has a drainage basin of 225,000 square kilometres.
It is navigable from the Lena to Bodaybo. Upstream, tugs can haul barges as far as the Baikal Amur Mainline, but this is becoming rare.
The Vitim is an excellent place for adventure rafting, but is rarely visited because of its isolation. Baissa, one of the famous localities of fossil insects is situated on the left bank of the Vitim River.
