Gulgong is a 19th-century gold rush town in the Central Tablelands and the wider Central West regions of the Australian state of New South Wales. The town is situated within the Mid-Western Regional Council local government area. It is located about 300 km (190 mi) north west of Sydney, and about 30 km north of Mudgee along the Castlereagh Highway. At the 2016 Census, Gulgong had a population of 2,521.

The Holtermann Collection is the name given to a collection of over 3,500 glass-plate negatives and albumen prints, many of which depict life in New South Wales goldfield towns. It also includes numerous photographs of Australian rural towns and the cities of Sydney and Melbourne taken between 1871 and 1876. The collection is held by the State Library of New South Wales.