Bristol Zoo is a zoo in the city of Bristol in South West England. The zoo's stated mission is "Bristol Zoo Gardens maintains and defends biodiversity through breeding endangered species, conserving threatened species and habitats and promoting a wider understanding of the natural world".

Opened in 1836 by the Bristol, Clifton and West of England Zoological Society, Bristol Zoo is the world's oldest provincial zoo. It is a Victorian walled zoo located between Clifton Down and Clifton College, near Brunel's Clifton Suspension Bridge; it covers a small area by modern standards, but with a considerable number of species. In the 1960s the zoo came to national prominence by appearing in the UK television series, Animal Magic, hosted by the comic animal 'communicator', Johnny Morris. Morris would play keeper and voice all the animals there.

The zoo's official name is Bristol Zoological Gardens ('Bristol Zoo Gardens' for commercial purposes). This is not in recognition of the flower displays but recognises the first use of that title at the Regent's Park Zoological Gardens. Bristol, like its earlier London counterpart, includes several original buildings which have been praised for their architectural quirks, despite being unsuitable for the care of animals; the (former) Giraffe House joins the main entrance lodge and the south gates on Guthrie Road as a Grade II listed building. The old Monkey Temple, resembling a southern-Asian temple, is now home to an exhibit called "Smarty plants", an interactive exhibit which shows how plants use and manipulate animals to survive.

Bristol ⁱ/ˈbrɪstəl/ is a city, unitary authority area and ceremonial county in South West England, with an estimated population of 433,100 for the unitary authority in 2009, and a surrounding Larger Urban Zone (LUZ) with an estimated 1,070,000 residents in 2007. It is England's sixth and the United Kingdom's eighth most populous city, one of the group of English Core Cities and the most populous city in South West England.

Historically within Gloucestershire, the city received a Royal Charter in 1155 and was granted County status in 1373. From the 13th century, for half a millennium, it ranked amongst the top three English cities after London, alongside York and Norwich, on the basis of tax receipts, until the rapid rise of Liverpool, Birmingham and Manchester during the Industrial Revolution in the latter part of the 18th century. It borders the counties of Somerset and Gloucestershire, and is also located near the historic cities of Bath to the south east and Gloucester to the north. The city is built around the River Avon, and it also has a short coastline on the Severn Estuary, which flows into the Bristol Channel.