The Executive Committee is composed of the President and four Vice-Presidents.  The Secretary General  of the IAU serves as secretary to the Executive Committee. The Executive Committee acts on behalf of the Administrative Board between meetings and guides the Association’s action agenda and program of activities.  It provides support to the President of the Association by preparing the meetings of the Administrative Board and the business sessions of the General Conference.  One Vice-President, so designated, replaces the President of the Association should the need arise for whatever reason during the latter’s term of office.  One Vice-President, also so designated, acts as Treasurer and chairs the Finance Committee.

The Executive Committee is composed of: