The Japan Accreditation Board for Conformity Assessment (JAB) is a private nonprofit foundation and the only organization in Japan responsible for accreditation under the conformity assessment scheme. JAB was established in November 1993 in the name of 'The Japan Accreditation Board for Quality System Registration as the accreditation body under the quality system registration scheme in accordance with the recommendation presented by the Japanese Industrial Standards Committee, supported by 35 industrial organizations under the auspices of the Japan Federation of Economic Organizations. Since then, due to the global movement to establish an environmental management system registration scheme and also because of rising needs to establish a laboratory accreditation scheme in Japan, JAB amended its Articles of Association in June 1996 to extend its scope of activities, changing at the same time its name to The Japan Accreditation Board for Conformity Assessment.

By conducting the following activities related to conformity assessment against Japanese Industrial Standards (JIS) or international standards, it is the objective of JAB to develop and establish the conformity assessment scheme in Japan and the mutual recognition scheme with accreditation bodies abroad, through which to promote and contribute to the sound development of Japanese industry and economy.