CASSA is a federation of provincial and territorial professional affiliates and individual members:

AAESQ and ADGESBQ (Quebec)
BCSSA (British Columbia)
NLASSA (Newfoundland and Labrador) 
NWTSA (Northwest Territories)
Yukon
Nunavut
Prince Edward island
MASS (Manitoba)
NBSSA (New Brunswick)
OCSOA (Ontario) 
CASS (Alberta)
LEADS (Saskatchewan)
RNDGÉ