The International Primate Protection League (IPPL), founded in 1973 in Thailand by Dr. Shirley McGreal, is represented in 31 countries and has offices in the US, and works toward the well being of non-human primates (NHP). Its advisory board consists of experts from zoology, anthropology, medicine, biology, veterinary medicine, and psychology.
The IPPL works in a number of areas. In countries where NHPs live, IPPL helps to create and preserve national parks and sanctuaries, and lobbies for bans on hunting and trapping. It raises money to fund sanctuaries, including one for gibbons obtained from research laboratories. In countries that import NHPs, IPPL monitors the trade, and the conditions in which zoo and laboratory NHPs are kept.
The British branch, IPPL-UK, was founded in 1977 by Cyril Rosen.