Munmurra River, a perennial river of the Hunter River catchment, is located in the Upper Hunter region of New South Wales, Australia.

Munmurra River rises on the southern slopes of the Great Dividing Range, below Breeza Lookout, northeast of Cassilis and flows generally south by west, joined by four minor tributaries before reaching its confluence with the Goulburn River. The river descends 876 metres (2,874 ft) over its 74 kilometres (46 mi) course.

South of the town of Cassilis, the Golden Highway crosses the Munmurra River.

• List of rivers of Australia
• List of rivers of New South Wales (L–Z)
• Goulburn River National Park
• Rivers of New South Wales

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

32°09′S 150°01′E / 32.150°S 150.017°E / -32.150; 150.017