We report a case of a 33–yr–old male patient presented to us with dyspnoea of NYHA grade2 of 30 days duration, who was evaluated to have non coronary sinus of Valsalva aneurysm rupturing into right atrium. This is a very rare congenital cardiac anomaly with variable clinical presentation ranging from asymptomatic detection on imaging to acute coronary syndrome and sudden cardiac death. Rupture is the most dreaded complication and usually manifests as an acute event.