American Society of Primatologists - ASP is a 501(c)(3) nonprofit scientific and educational society that promotes conservation, welfare, and research
The Douc Langur Project - The Douc Langur Project conducts extensive surveys of the douc langur in Vietnam.
Duke University Primate Center - The Duke Primate Center has the largest collection of lemurs in the world, and is very active in Madagascar conservation.
Intl Primate Protection League IPPL works around the world to conserve and protect non-human primates by combatting illegal trade, maintaining a small grant program and assisting rescue centers in several countries.
Orangutan Foundation International - Nonprofit organization dedicated to studying and preserving orangutans and educating the public about their plight
Primate Info Net - Primate Info Net, a service of the Wisconsin Regional Primate Research Center, is a major linking site for the field of primatology.