» Association of Medical Illustrators (AMI)    International organization composed of medical illustrators, related professionals, and students. Membership information and member directory.    http://www.medical-illustrators.org/

» Guild of Natural Science Illustrators    Non-profit organization that sets professional standards, provides opportunities for professional and scholarly development, encourages and assists member networking.    http://www.gnsi.org/

» Israel Association of Illustrators    Non profit organizations for the advancement of the profession of illustration in Israel. Includes members portfolios.    http://www.illustrators.org.il/

» Society of Illustrators    A nonprofit educational organization promoting illustration. Home of the Museum of American Illustration.    http://www.societyillustrators.org/

» Society of Illustrators San Diego    Professional organization that promotes the interests of illustrators. Includes activities, resources, membership information, and samples of members' work.    http://www.societyofillustratorssandiego.org/

» The Association of Illustrators (AOI)    Non-profit trade association dedicated to its members’ professional interests and the promotion of illustration. Provides news, membership information, portfolios and events.    http://www.theaoi.com/

» The Illustrators' Partnership of America (IPA)    Non-profit organization dedicated to promoting the business of professional illustration and protecting the intellectual property rights of its members.    http://www.illustratorspartnership.org/