The membership of World Cat Congress is comprised of the world's major cat fancies, including the founding members; Fédération Internationale Féline - FIFe, Cat Fanciers' Association - CFA, The International Cat Association - TICA, World Cat Federation - WCF and Australian Cat Federation - ACF, as well as, New Zealand Cat Fancy - NZCF which joined in 2001 and the three newest members; Co-Ordinating Cat Council of Australia - CCC of A, Governing Council of the Cat Fancy - GCCF, United Kingdom, and Southern African Cat Council - SACC, whcih joined in 2006.
In order to apply for membership a body must be nominated and seconded in writing by two of the foundation members. The requirements to qualify for membership are set out in the World Cat Congress' constitution.
Whilst the members are often competitors on the international cat scene, each has enthusiastically embraced the forum provided by the World Cat Congress to promote the health & welfare of cats, encourage the sharing of resources in the interests of the cats, and educate the participants of the global cat fancy.