After a brief description of the International Organisation of Standardisation (ISO) and its Technical Committee (TC) 85 'Nuclear Energy', the work of its Sub-Committee (SC) 2 'Radiation Protection' is described in some detail. Several international standards on subjects closely related to radiation protection have already been published, for example ISO-361 (basic radiation protection symbol), ISO-1757 (photographic dosemeters), ISO-1758 and 1759 (direct and indirect-reading pocket exposure meters), ISO-2889 (sampling of airborne radioactive material), ISO-4037 (X and gamma reference radiations for calibration) and ISO-4071 (testing of exposure meters and dosemeters). TC 85/SC 2 has currently eight active Working Groups dealing with 14 standards projects, mostly in advanced stages, in such fields as neutron and beta reference radiations, and X and gamma radiations of high and low dose rates and high energies for calibration purposes, reference radiations for surface contamination apparatus, ejection systems for gamma radiography apparatus, industrial and laboratory irradiators, lead shielding units, protective clothing, thermoluminescence dosemeters, radioelement gauges and surface contamination and decontamination.