Richard D. Ryder

Richard D. Ryder (born 1940) is a British psychologist and one of the pioneers of the modern animal liberation and animal rights movements.

A former chairman of the Royal Society for the Prevention of Cruelty to Animals, and a past president of Britain's Liberal Democrat Animal Protection Group, Ryder is currently (April, 2004) parliamentary consultant to the Political Animal Lobby.

Ryder coined the term speciesism, using it first in a privately-printed leaflet published in Oxford in 1970.