New Zealand: NZSAG New Zealand Society of Artists in Glass  http://www.nzsag.co.nz/Membership-5.html
Established in 1980, NZSAG is a non-profit organisation with more than 200 members consisting of artists, collectors, interested members of the public and related institutions. Artists are represented in glass practices including: blowing, kiln casting, flame working, fusing, stained glass, pate-de-verre, cold construction and mixed media.

Australia: AUSGLASS http://www.ausglass.org.au/join-ausglass.php
Ausglass is in inclusive organisation that has members from all aspects of studio glass including collectors, galleries, students and artists. One of the main reasons for people to join Ausglass is to connect with like minded people who share a passion for glass art.

USA: GAS Glass Art Society       http://www.glassart.org/Renew_Join.html 
The Glass Art Society is an international non-profit organisation founded in 1971 whose purpose is to encourage excellence, to advance education, to promote the appreciation and development of the glass arts, and to support the worldwide community of artists who work with glass.

UK: CGS Contemporary Glass Society  http://www.cgs.org.uk/MEMBERSmoduleASP/signup.asp
The Contemporary Glass Society was founded in 1997 with the dual objectives of encouraging excellence in glass as a creative medium and helping to develop a greater awareness of contemporary glass worldwide.