The Secretariat provides administrative services to the Organization. Its chief administrative officer is the Executive Secretary who is appointed by the Commission.

Duties of the Secretariat include:

• make all arrangements necessary for the Commission and Scientific Council meetings;
• prepare and transmit draft provisional and provisional agendas;
• address communications to the Depository Government;
• receive the credentials of the representatives and of observers at annual and special meetings and report thereon to the Commission as required; and
• perform such other functions as may be assigned by the Commission, its Chair, or the Chair of a committee.        

Brynhildur Benediktsdóttir is the current Executive Secretary and began her four-year term in 2023.