Pigna Barney River, a partly perennial river of the Manning River catchment, is located in the Upper Hunter district of New South Wales, Australia.

Pigna Barney River rises on the eastern slopes of Mount Royal Range, south of the locale of Glenrock, and flows generally east by south before reaching its confluence with the Manning River, south of Mount Myra. The river descends 818 metres (2,684 ft) over its 40 kilometres (25 mi) course.

• Rivers of New South Wales
• List of rivers of New South Wales (L–Z)
• List of rivers of Australia

• "Manning River catchments" (map). Office of Environment and Heritage. Government of New South Wales.

31°52′S 152°37′E / 31.867°S 152.617°E / -31.867; 152.617