Cessnock is a city in the Hunter Valley of New South Wales, Australia, about 52 km (32 mi) by road west of Newcastle. It is the administrative centre of the City of Cessnock LGA and was named after an 1826 grant of land called Cessnock Estate, which was owned by John Campbell. The local area was once known as “The Coalfields”, and it is the gateway city to the vineyards of the Hunter Valley, which includes Pokolbin, Mount View, Lovedale, Broke, Rothbury, and Branxton.

According to the 2021 census of Population, there were 63,632 people in the Cessnock urban centre.

For a century Cessnock was served by the South Maitland Railway network, originally constructed for the coal industry, but which at one time had considerable passenger services terminating at Cessnock railway station, including a direct train to Sydney known as the Cessnock Flyer.