The Piney River is a stream that drains a portion of Tennessee's Cumberland Plateau generally known as Walden Ridge.

The Piney River rises near the Rhea County – Bledsoe County line and is referred to as Piney Creek in its upper reaches roughly until its confluence with Duskin Creek.

The stream flows out of the gap and is bridged by State Route 68 just before that road begins its steep climb up the Cumberland Escarpment onto Waldens Ridge.

The mouth of the Piney is one of the larger bays of Watts Bar Lake and contains several small islands.

[5] According to the Geographic Names Information System, Piney River has also been known historically as:[6]