Provides standards of communication, ethics, work practices, and knowledge for health physicists, and provides recognition as a Certified Health Physicist (CHP).

The IAEA is the world's central intergovernmental forum for scientific and technical co-operation in the nuclear field. Provides news and resources.

NCRP is a U.S. organization that seeks to formulate and disseminate information, guidance and recommendations on radiation protection and measurements which represent the consensus of leading scientific thinking.

Encourages advancement of radiation research in all areas of the natural sciences. Offers publications, membership information, jobs, funding and fellowship, newsletters, and graduate education information.