London Wildlife Trust (LWT), founded in 1981, is a local nature conservation charity for Greater London. It is one of 46 members of the Royal Society of Wildlife Trusts, each of which is a local nature conservation charity for its area. The Trust aims to protect London's wildlife and wild spaces, and it manages 36 nature reserves in Greater London. The Trust provides education services for schools. Local groups work on reserves and organise walks.

The Wildlife Trusts, the trading name of the Royal Society of Wildlife Trusts, is an organisation made up of 46 local Wildlife Trusts in the United Kingdom, the Isle of Man and Alderney. The Wildlife Trusts, between them, look after more than 2,300 nature reserves, covering around 98,500 hectares. As of 2020, the Trusts have a combined membership of over 870,000 members.