The occurrence of a giant ruptured aneurysm originating from the noncoronary sinus of Valsalva in the right atrium is extremely rare. Herein, a case is presented of a giant ruptured noncoronary sinus of Valsalva aneurysm (SVA) that was protruding into the right atrium, which was almost completely occupied by an aneurysm. A 61-year-old female was referred to the hospital for exertional palpitation and dyspnea.