Dudley Zoo & Castle is a 40-acre (16 ha) zoo located within the grounds of Dudley Castle in the town of Dudley, in the Black Country region of the West Midlands, England. The Zoo opened to the public on 18 May 1937. It contains 12 modernist animal enclosures and other buildings designed by the architect Berthold Lubetkin and the Tecton Group. The zoo went into receivership in 1977 and was purchased by Dudley Metropolitan Borough Council. Dudley Zoo is now operated by Dudley and West Midlands Zoological Society, founded in 1978 and a registered charity.

Dudley is a market town in the West Midlands, England, 6 miles (9.7 km) southeast of Wolverhampton and 8 miles (13 km) northwest of Birmingham. Historically part of Worcestershire, the town is the administrative centre of the Metropolitan Borough of Dudley. In the 2011 census, it had a population of 79,379. The Metropolitan Borough, which includes the towns of Stourbridge and Halesowen, had a population of 312,900. In 2014, the borough council adopted a slogan describing Dudley as the capital of the Black Country, a title by which it had long been informally known.