ARR The Association of Radiation Research. (ARR) objectives are to promote learning and advance education in the field of radiation research.
CERAD The Centre for Environmental Radioactivity. (CERAD) studies the harmful effects of radiation on organisms and the ecosystem and to improve the protection of people and environment.
CSN The Spanish Nuclear Safety Council. (CSN) is the sole nuclear safety and radiation protection authority in Spain.
CNL Canadian Nuclear Laboratories Canada's premier nuclear science and technology organisation. 
DSA Norwegian Radiation and Nuclear Safety Authority (DSA) is the national authority and expert body in matters concerning nuclear security, radiation use, natural radiation and radioactive contamination in the environment.
IAEA International Atomic Energy Agency  (IAEA) is an organisation within the United Nations family and promotes safe, secure and peaceful use of nuclear technologies. 
IARC International Agency for Research on Cancer.
IARR International Association for Radiation Research. (IARR) is an independent organisation of radiation research societies at an international level. Their aim is to advance radiation research in the fields of physics, chemistry, biology and medicine. 
ICRU International Commission on Radiation Units and Measurements.  The ICRU (originally known as the International X-Ray Unit Committee and later as the International Committee for Radiological Units) was conceived at the First International Congress of Radiology (ICR) in London in 1925 and officially came into being at ICR-2 in Stockholm in 1928. The primary objective was to propose a unit for measurement of radiation as applied in medicine.
ILO International Labour Organisation.  (ILO) is the UN specialised agency which seeks the promotion of social justice and internationally recognised human and labour rights. It has an interest in the radiation protection of workers.
IRPA International Radiation Protection Association(IRPA) is an international association of individual radiation protection practitioners joining through national or regional societies.
IRSN Institute for Radioprotection and Nuclear Safety, France.  (IRSN), is a public expert with industrial and commercial activities and is placed under the joint authority of the Ministries of Defense, the Environment, Industry, Research, and Health. It is the nation’s public service expert in nuclear and radiation risks, and its activities cover all the related scientific and technical issues.
MELODI Multidisciplinary European Low Dose Initiative.  (MELODI) is an European Platform dedicated to low dose radiation risk research.
NEA Nuclear Energy Agency. The Nuclear Energy Agency (NEA) is an intergovernmental agency that facilitates co-operation among countries with advanced nuclear technology infrastructures to seek excellence in nuclear safety, technology, science, environment and law. 
NCRP National Council on Radiation Protection and Measurements, USA. (NCRP) was chartered by the U.S. Congress in 1964 as the National Council on Radiation Protection and Measurements.
PHE Public Health England, UK.  Public Health England protect and improve the nation's health and wellbeing, and reduce health inequalities.
CRCE. Centre for Radiation, Chemical and Environmental Hazards.
Radiation Protection Services. UK's primary authority on radiation protection.
RADRES Radiation Research Society
RERF Radiation Effects Research Foundation, Japan. The main focus of RERF’s research program is to study radiation effects in the survivors of the atomic bombings of Hiroshima and Nagasaki.
SRP The Society for Radiation Protection. (SRP)is a professional and learned society whose objective is to promote the science and art of radiation protection and allied fields for the public benefit.
SSI Swedish Radiation Protection Authority, Sweden. The Swedish Radiation Safety Authority reports to the Ministry of the Environment and has mandates from the Swedish Government within the areas of nuclear safety, radiation protection and nuclear non-proliferation.
UN United Nations - The United Nations is an intergovernmental organisation which aims to maintain peace, security and friendly relationships among nations.
UNEP United Nations Environment Programme - The United Nations Environment Programme was established by the Stockholm Conference of 1972 as the environmental conscience of the United Nations system. 
USNCI National Cancer Institute, USA. (NCI) leads the cancer research community toward accelerating the rate of scientific discovery and reducing the burden of cancer in the United States and around the world. 
USCEAR The United Nations Scientific Committee on the Effects of Atomic Radiation,UNSCEAR is the official international authority on the levels and effects of ionizing radiation, used for peaceful as well as military purposes and derived from natural as well as man-made sources.
WHO World Health Organization - The WHO is the United Nations specialized agency for health. Established in 1948, WHO's objective is the attainment by all peoples of the highest possible level of health.