Neurofibromatosis is a rare cause of coronary aneurysm. We present a case of multiple coronary artery aneurysms in a patient with neurofibromatosis. Coronary angiography was performed because of postmyocardial infarction angina. Coronary angiography revealed multiple coronary aneurysms in the left anterior descending and circumflex arteries, and diffuse irregularities in the right coronary artery. None of the coronary arteries showed critical stenosis. The patient was successfully managed with aspirin, clopidogrel, and beta-blocker therapy.