The
Tar River is a river in
Kara-Kulja District of
Osh Province of
Kyrgyzstan. It rises on the south-west slopes of
Fergana Range and north slopes of
Alay Mountains. The portion of the Tar River from its source to confluence with Eshegart River is known as Kegart, the portion up to mouth of Terek River is called Alaykuu River, downstream its name is Oy-Tal River, and from its confluence with Kara-Bel River it is known as Tar River. By confluence with Kara-Kulja River Tar River forms
Kara Darya River.