The International Day for Interventional Cardiology is a United Nations observance held annually on September 16.

• It was created to highlight the importance of intervention cardiology for lowering preventable death rates.
• Interventional cardiology is a subdiscipline of cardiology dealing with the catheter-based treatment of structural heart diseases. It is a relatively new branch of cardiology that developed in the second half of the 20th century.
• The person credited with being the father of interventional cardiology is Andreas Grüntzig, a German cardiologist and radiologist who developed and performed the first successful balloon angioplasty while working at the University Hospital of Zurich.