International Commission on Non-Ionizing Radiation Protection
- ICNIRP is an independent scientific organization, whose aims are to provide guidance and advice on the health hazards of non-ionizing radiation exposure. Provides information on publications, activities and links.
- http://www.icnirp.org/

South African Association of Physicists in Medicine and Biology
- SAAPMB is an association comprised of individuals and societies interested in the interaction of radiation with the human body and related physical phenomena. Provides news and resources.
- http://www.saapmb.org.za/

International Radiation Protection Association
- For people engaged in radiation protection activities in all parts of the world. Website includes organization information, and professional training materials on a wide range of topics in radiological protection and nuclear medicine.
- http://www.irpa.net/

Health Physics Society
- Professional organization dedicated to development, dissemination, and application of both the scientific knowledge of, and the practical means for, radiation protection.
- http://www.hps.org/

European Federation of Organisations in Medical Physics
- The EFOMP represents more than 5000 physicists and engineers in the field of Medical Physics.
- http://www.efomp.org/

American Association of Physicists in Medicine
- AAPM homepage with a link to the journal "Medical Physics". Resources in Medical Physics.
- http://aapm.org/

Canadian Radiation Protection Association
- The CRPA is a professional society that supports the development and implementation of radiation safety programs in all areas of industry, medicine, research and the environment.
- http://www.crpa-acrp.ca