Marwell Zoo is a 140-acre (57 ha) zoo situated in Colden Common near Winchester, in the English county of Hampshire. It is owned and run by the registered charity Marwell Wildlife. The zoo is home to 1,208 animals of 149 species. The charity undertakes a range of educational and conservation activities, with a particular focus on Africa in addition to work from its base.

Colden Common is a civil parish in the Winchester District of Hampshire, England, approximately 5 miles south of the city of Winchester, covering an area of 690.74 hectares (2.6670 sq mi) with a resident population of approximately 4,000 people. It includes the village of Colden Common and the hamlets of Hensting, Fisher's Pond, Nob's Crook, Highbridge and Brambridge. Part of the parish lies within the South Downs National Park.