The following guideline represents the position of the International Liver Transplantation Society (ILTS) on key preoperative, operative, and postoperative aspects surrounding living liver donation. These recommendations were developed from experts in the field from around the world. The authors conducted an analysis of the National Library of Medicine indexed literature on "living donor liver transplantation" [Medline search] using Grading of Recommendations Assessment, Development and Evaluation methodology. Writing was guided by the ILTS Policy on the Development and Use of Practice Guidelines (www.ilts.org). ILTS members, and many more nonmembers, were invited to comment. Recommendations have been based on information available at the time of final submission (March 2016). The lack of randomized controlled trials in this field to date is acknowledged and is reflected in the grading of evidence. Intended for use by physicians, these recommendations support specific approaches to the diagnostic, therapeutic, and preventive aspects of care.