The shortage of cadaveric donors for renal transplantation has prompted to expand the criteria used for donor selection like cadaveric pediatric kidney. In addition there are some challenges to use pediatric kidneys because of technical complications, injuries due to hyperfiltration syndrome and survival rate. In this study we determined our results in transplantation of Enbloc pediatric kidneys to adults. From May 2001 to May 2005, 245 cadaveric kidney transplants have been performed in our hospitals. Seven enboc kidneys were procured from marginal pediatric donors (age <5 years, donor weight <15 kg, high creatinine clearance and or kidney length <8 cm) which transplanted to adult recipients. Then patients followed for 3 to 24 months. Follow up included serum creatinine measurement, ultrasonography, DTPA scan, and MRI. One year graft and patient survival was 86%. Serum creatinine ranged between 0.8- 1.9 mg/dl from 3 to 24 months postoperatively. Complications included ARF in 1 (managed by conservative therapy and dialysis for 2 weeks), renal vein thrombosis in 1 (treated by anticoagulation) and subcutaneous hematoma in 1 patient. There were no urologic complications like ureteral stenosis, ureteral leakage and lymphocele. Ultrasonography and MRI revealed significant growth in grafts during 3 to 12 month postoperatively. Pediatric enbloc kidney transplantation is a safe and suitable alternative graft for adult recipients. One year graft and patient survival are acceptable and complications rate is low.