Pseudoaneurysm of the right ventricular outflow tract(RVOT) is an uncommon yet catastrophic complication after intracardiac repair of Tetralogy of Fallot(TOF). We describe a patient diagnosed with RVOT pseudoaneurysm in the immediate postoperative period after complete repair for TOF with single pulmonary artery. The pseudoaneurysm was repaired successfully. This case is reported to emphasise the importance of a high degree of suspicion of this rare entity in these patients for its early diagnosis and management.