Harvard’s Office of Postdoctoral Affairs website provides links to and information about a number of professional groups and organizations of relevance to postdoctoral fellows, which include the following:

• National Postdoctoral Association
• HMS/HSDM Postdoctoral Fellows Association (PDA)
• Harvard Science
• Harvard GSAS Biotechnology Club
• Minority Biomedical Scientists of Harvard
• International Science and Health Network (At Harvard)
• Graduate Women in Science (GWIS)
• Association of Women in Science (AWIS)
• The Healthcare Business Women's Association
• Women Entrepreneurs in Science and Technology (WEST)
• MentorNet, the E-Mentoring Network for Engineering and Science

In addition, the website lists a number of links to relevant job websites.  Please visit the Postdoctoral Affairs website for the complete listing.