Founded in 1826, the Zoological Society of London (ZSL) is an international scientific, conservation and educational charity whose mission is to promote and achieve the worldwide conservation of animals and their habitats.

Its mission is realised through its groundbreaking science, its active conservation projects in more than 50 countries and its two Zoos, ZSL London Zoo and ZSL Whipsnade Zoo.

ZSL is a member of BIAZA (British and Irish Association of Zoos and Aquariums), the professional organisation representing the zoo and aquarium community.