As the official Clan and Family Society authorised by the Chief, Peter Carruthers of Holmains, to represent Carruthers and its derivatives worldwide, Clan Carruthers Society- International is in membership of the following international Clan and Society organisations. with evidence of the same taken directly from their membership lists, seen below:
AUSTRALIA
SAHC: Scottish-Australian Heritage Council
CANADA
CASSOC : Clans and Scottish Societies of Canada
UNITED STATES OF AMERICA
COSCA: Council of Scottish Clans and Associations
CLAN CARRUTHERS SOCIETY (USA) 