This study analyzed how features of a liver graft and the technique of biliary reconstruction interact to affect biliary complications in pediatric liver transplantation. A retrospective analysis was performed of data collected from 2001 to 2011 in a single high-volume North American pediatric transplant center. The study cohort comprised 173 pediatric recipients, 75 living donor (LD) and 98 deceased donor (DD) recipients. The median follow-up was 70 months. Twenty-nine (16.7%) patients suffered a biliary complication. The majority of leaks (9/12, 75.0%) and the majority of strictures (18/22, 81.8%) were anastomotic. There was no difference in the rate of biliary complications associated with DD (18.4%) and LD (14.7%) grafts (P 5 0.55). Roux-en-Y (RY) reconstruction was associated with a significantly lower rate of biliary complications compared to duct-to-duct reconstruction (13.3% versus 28.2%, respectively; P 5 0.048). RY anastomosis was the only significant factor protecting from biliary complications in our population (hazard ratio, 0.30; 95% confidence interval, 0.1-0.85). The leaks were managed primarily by relaparotomy (10/12, 83.3%), and the majority of strictures were managed by percutaneous biliary intervention (14/22, 63.6%). Patients suffering biliary complications had inferior graft survival (P 5 0.04) at 1, 5, and 10 years compared to patients without biliary complications. Our analysis demonstrates a lower incidence of biliary complications with RY biliary reconstruction, and patients with biliary complications have decreased graft survival. Liver Transpl 21:1082-1090, 2015. V C 2015 AASLD.Received January 12, 2015; accepted April 28, 2015.Liver transplantation (LT) in the pediatric population is a successful means of treating end-stage liver disease, producing excellent long-term outcomes. 1 Bile leaks and anastomotic strictures are the most frequently seen early technical postoperative complications, 2,3 with single-center analyses reporting the rate of biliary complications to range from 10% to 45%. [4][5][6][7][8][9][10][11][12] Registry data from pediatric-focused LT programs in North America report an overall rate of biliary complications of approximately 15%. 2,13 Although