- World Health Organization (WHO)
- International Commission on Radiation Units (ICRU)
- International Centre for Theoretical Physics (ICTP)
- Bureau International des Poids et Mesures (BIPM)
- American Association of Physicist in Medicine (AAPM)
- International Organization for Medical Physics (IOMP)
- International Commission on Radiological Protection (ICRP)
- European Federation of Organisations for Medical Physics (EFOMP)
- The European Society for Radiotherapy and Oncology (ESTRO)
- Intra-Africa Metrology System (AFRIMETS)
- The European Association of National Metrology Institutes (EURAMET)
- European Society of Radiology (ECR)
- United Nations Scientific Committee on the Effects of Atomic Radiation (UNSCEAR)
- La Asociación Latinoamericana de Física Médica (ALFIM)
- Middle East Federation of Organizations of Medical Physics (MEFOMP)
- Federation of African Medical Physics Organizations (FAMPO)
- South East Asian Federation of Organization for Medical Physics (SEAFOMP)
- Asia-Oceania Federation of Organization for Medical Physics (AFOMP)