Organizational
American Association of Zoo Keepers (AAZK)
Bowling for Rhinos (BFR)
International Congress of Zoo Keepers (ICZ)
Did you know that if you are a member of AAZK you are also automatically a member of ICZ? 
Association of Zoos and Aquariums


Conservation
The Center for Great Apes - Orangutan and Chimpanzee Conservation
Polar Bears International
World Wildlife Fund
Okapi Conservation Fund
International Rhino Foundation (IRF)