Myall River, an open semi-mature brackish freshwater barrier estuary[5] of the Mid-Coast Council[3] system, is located in the Mid North Coast region of New South Wales, Australia.

Myall River rises out of the southern slopes of Kyle Range within the Great Dividing Range, north northeast of Stroud, and flows generally south southeast then southwest, joined by tributaries, before reaching its mouth within Port Stephens at Hawks Nest.

Port Stephens then empties into the Tasman Sea of the South Pacific Ocean.

The Bulahdelah Bridge, carries the Pacific Highway, across the river north of Bulahdelah and the Singing Bridge crosses the river between Tea Gardens and Hawks Nest..

The word myall is an Australian Aboriginal term for a small silver-grey wattle tree.