Knut E. A. Lundin (born 1958) is Professor of Medicine and Head of clinical education at Faculty of Medicine, University of Oslo, Norway. He is a consultant gastroenterologist at the endoscopy unit at Oslo University Hospital Rikshospitalet. His scientific training was done at the Institute of Immunology with a Dr. med. degree in cellular immunology in 1990. He has since the mid 1980’s worked together with professor Ludvig M. Sollid on the immunobiology and clinical aspects of the small intestine with particular focus on coeliac disease. His highest-ranking scientific achievement was published in 1993 when gluten specific T cells from the small intestine of coeliac disease patients were reported. This powerful tool was in the years to come used to define the gluten peptide antigens driving the disease. In recent years focus has also been paid to non-coeliac gluten sensitivity. Other clinical and scientific areas involve “regular” and “complicated” coeliac disease, refractory coeliac disease, inflammatory bowel disease and other GI disorders in a tertiary referral hospital setting. He has training in all aspects of diagnostic and therapeutic endoscopy. Together with Ludvig M. Sollid he arranged the 14th International Coeliac Disease Symposium in Oslo in 2011. He has been involved in the founding of the International Society for Study of Coeliac Disease in 2011 and the European Society for Study of Coeliac Disease in 2015 and holds a board position in both societies. He has published more than 200 papers as original papers, reviews and book chapters and has been cited in > 10 000 other publications.