The Coșna (in its upper course also Coșnița) is a right tributary of the river Bancu in Romania. It flows into the Bancu near Valea Bancului. Its length is and its basin size is . Tributaries The following rivers are tributaries to the river Coșna (from source to mouth): Left: Dieciu, Pietriș, Diaca, Vâlta Right: Zimbroaia, Netedu References Rivers of Romania Rivers of Suceava County