Catholic Health Association of Canada: Umbrella organization of health care facilities and associations witnesses to the healing ministry and abiding presence of Jesus. Site in English and French.
Catholic Health Association of the United States: National leadership organization of more than 1,200 Catholic health care sponsors, systems, facilities, and related organizations and services.
Catholic Medical Association: Exists to uphold the principles of Catholic faith and morality as related to the science and practice of medicine.
National Association of Catholic Chaplains: Professional association for certified chaplains and CPE supervisors. Provides standards, certification, education, advocacy, and professional development.
The Catenian Association: International brotherhood of Catholic business and professional men. History, aims, directory of provinces, contact information. Online version of monthly magazine (in PDF). Site uses frames.