Dublin Zoo (Irish: Zú Bhaile Átha Cliath), in Phoenix Park, Dublin, is the largest zoo in Ireland, and one of Dublin's most popular attractions. Opened in 1831, the zoo describes its role as conservation, study, and education. Its stated mission is to "work in partnership with zoos worldwide to make a significant contribution to the conservation of the endangered species on Earth".

Covering over 28 hectares (69 acres) of Phoenix Park, it is divided into areas named Asian Forests, Orangutan Forest, The Kaziranga Forest Trail, Fringes of the Arctic, Sea Lion Cove, African Plains, Roberts House, House of Reptiles, City Farm and South American House.

The Royal Zoological Society of Dublin was established at a meeting held at the Rotunda Hospital on 10 May 1830 and the zoo, then called the Zoological Gardens Dublin, was opened to the public on 1 September 1831. The animals, 46 mammals and 72 birds, were donated by London Zoo.

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