Tiha Bârgăului (Hungarian: Borgótiha) is a commune in Bistrița-Năsăud County, Transylvania, Romania.

The commune is situated at a mean altitude of 545 m (1,788 ft), in the foothills of the Bârgău and Călimani mountain ranges of the Carpathians.

The villages of Ciosa and Mureșenii Bârgăului are part of The Highlands section of the Via Transilvanica long-distance trail.

It is traversed west to east by national road DN17 [ro] (part of European route E58), which starts in Dej and ends in Suceava.

The road crosses into Western Moldavia through the Tihuța Pass, at an altitude of 1,201 m (3,940 ft), just east of Piatra Fântânele village.