CSSA may refer to:
Organizations Cactus and Succulent Society of America California State Student Association Center for Service & Social Action, furthering the Jesuit mission of educating through service and advocacy Chinese Students and Scholars Association, the official organization for overseas Chinese students Connecticut State Soccer Association Corporación Sudamericana de Servicios Aéreos, an airline merged into Aviación del Litoral Fluvial Argentino Crop Science Society of America
Other uses Star of South Africa, Commander (post-nominal letters) Comprehensive Social Security Assistance, a welfare programme operated by Social Welfare Department of Hong Kong Camp Stanley Storage Activity, operated by Camp Stanley, US
See also CSSA Nations Cup, a former football championship