The artery and vein of the transplanted kidney are generally anastomosed to the external iliac artery and vein, respectively. Therefore, in open abdominal artery aneurysm (AAA) repair in renal transplant patients, kidney ischemia due to a proximal aortic clamp is a serious problem. We successfully performed endovascular aneurysm repair (EVAR) of AAA without aortic clamping in two renal transplant recipient cases. The two patients were diagnosed with large AAAs following the renal transplant, and EVAR was performed. To protect the renal function, we used N-acetylcysteine premedication and hydration before the operation, and we could then reduce the iodine contrast medium by using echography of the artery during the operation. In this report, a case where EVAR with renal function protection is a useful treatment for renal transplant recipients with AAA is described.