A 66-year-old male presented with intermittent leftsided abdominal pain and underwent a CT KUB where an incidental giant coronary aneurysm of the left anterior descending (LAD) artery was discovered along with a smaller right coronary artery aneurysm. Surgery for coronary artery aneurysms was performed on cardiopulmonary bypass with cardioplegic arrest. The giant partially thrombosed LAD aneurysm was longitudinally opened, partially resected, the thrombus was removed and both the inflow and outflow ligated. Inflow of a large diagonal artery from the aneursym was also ligated. Bypass grafting of the LAD with a left internal mammary artery bypass and a saphenous vein graft to the diagonal artery was performed. The right coronary artery aneurysm was also ligated and bypassed using a saphenous vein graft. The patient had an uneventful postoperative course