EUROSAI – European Organization of Supreme Audit Institutions – is one of the seven regional working groups of the International Organization of Supreme Audit Institutions (INTOSAI).

Currently EUROSAI comprises 50 members: Supreme Audit Institutions of 49 countries and the European Court of Auditors.

INTOSAI comprises 191 full members: the Supreme Audit Institutions (SAIs) of 190 countries and the European Court of Auditors (and 4 associate members) and is listed as a support organisation of the United Nations.