A 46-year-old woman after renal transplantation 10 years ago underwent CABG using the right internal thoracic artery to LAD, the left internal thoracic artery to Circumflex and the right gastroepiploic artery to RCA, with the diagnosis of unstable angina (triple vessels disease) after failed PTCA. The postoperative course has been uneventful. To our knowledge, this is the first case who underwent GABG after renal transplantation in Japan.