• American College of Cardiology membership organization for physicians, registered nurses, nurse practitioners, clinical nurse specialists, and physician assistants.

• American College of Chest Physicians

• American Society of Echocardiography professional organization for echocardiographers and sonographers providing information for both professionals and patients.

• American Society of Nuclear Cardiology (ASNC) promotes nuclear cardiology services through education, leadership, and the establishment of standards and guidelines.

• Association of European Paediatric Cardiologists

• B. M. Birla Heart Research Centre heart research centre in South Asia.

• Baker Medical Research Institute World Health Organization collaboration centre for research and training in cardio-vascular disease.

• Belgian Society of Cardiology

• Canadian Cardiovascular Society

• Canadian Society of Cardiology Technologists (CSCT) nonprofit organization established to raise the standard of practice, level of competence and the quality of patient care in Canada. Includes education, membership, and contact information.

• Canadian Society of Clinical Perfusion seeks to encourage and foster the development of the profession through education and certification.

• Cardiovascular Research Institute of Southern California medical images of the heart.

• Escorts Heart Institute And Research Center provides cardiac care to patients.

• European Association of Cardiothoracic Anaesthesiologists (EACTA) information of the society and its scientific activities.

• European Society of Cardiology

• Florida Heart Institute

• Heart Care International nonprofit organization that performs heart surgery on children in Guatemala and other developing countries.

• Heart Center of Sarasota (Florida) we strive to provide a complete range of outpatient cardiovascular health services.

• International Society for Minimally Invasive Cardiac Surgery organizes and centralizes the various surgical centers concerned with patient outcomes, techniques, and progessive development of less invasive forms of heart surgery.

• Lousiana Chapter nonprofit professional medical society and teaching institution, dedicated to cardiovascular care and disease prevention.