The Tărlung (in its upper course also: Ramura Mare; Hungarian: Tatrang) is a left tributary of the river Râul Negru in Romania. It discharges into the Râul Negru in Băcel. Its length is 57 km (35 mi) and drains a basin spanning 485 km (187 sq mi).

Tributaries

The following rivers are tributaries to the river Tărlung (from source to mouth):

• Left: Urlățel, Urlatul Mic, Doftana, Gârcin
• Right: Capra Mică, Valea Cailor, Ramura Mică, Tesla, Dracu, Valea Satului, Zizin, Seaca, Valea Popii, Teliu, Dobârlău