The Câlnău is a left tributary of the river Buzău in Romania.

[3] Its length is 57 km (35 mi) and its basin size is 208 km2 (80 sq mi).

[2] The upper reach of the river is also known as Salcia.

The following villages are situated along the river Câlnău, from source to mouth: Valea Salciei, Modreni, Costomiru, Batogu, Murgești, Racovițeni, Petrișoru, Vadu Sorești, Fundeni, Zărnești, Sudiți, Coconari, Aliceni, Zilișteanca, Poșta Câlnău, Potârnichești and Gura Câlnăului.

This article related to a river in Buzău County is a stub.