: ''This article is about the Bosna River. For other uses of the term Bosna / Bosnia, see
Bosnia (disambiguation).''
The 'Bosna' (
Cyrillic: 'Босна') is the third longest
river in
Bosnia and Herzegovina, and is considered one of the country's three major internal rivers, along with the
Neretva and
Vrbas Rivers; the other three major rivers of Bosnia and Herzegovina are the
Una River, to the northwest, the
Sava River, to the north, and the
Drina River, to the east. The Bosna River flows for 271
kilometers (168
miles). Its name does not have any foreign variations. In the
Roman times the river was called the ''Bosona'', and it is thought that this is probably the
Illyrian origin of the name ''Bosna''.
Course and tributaries
The River Bosna also makes up the Bosna River Valley, the country's industrial center and home to close to a million people, as well as the location of several major cities. The river's biggest
tributaries are the Željeznica,
Miljacka, Fojnica, Lašva, Gostović, Krivaja,
Usora, and Spreča rivers.

The source of the
Bosna river on the outskirts of Sarajevo.
Its source is at the spring
Vrelo Bosne, at the
foothills of the Mount
Igman, on the outskirts of
Sarajevo. The spring is one of Bosnia and Herzegovina's chief natural landmarks and
tourist attractions. From there, the Bosna River flows northwards, through the heart of
Bosnia, eventually becoming a right
tributary of the
Sava River.
Although it does not pass through any foreign countries, the Bosna flows through a number of
cantons and
regions of Bosnia. From its starting point in the
Sarajevo Canton, it also flows through
Zenica-Doboj Canton,
Doboj Region, and
Posavina Canton, in that order.
On its way north the River Bosna also passes through the cities of
Visoko,
Zenica, and
Doboj.