Øyvind Ellingsen (born 1975) is a Norwegian Professor of Cellular Cardiology at the Norwegian University of Science and Technology (NTNU), a Consultant Physician at the Department of Cardiology, St. Olavs Hospital, Trondheim, Norway, and is currently Head of the Department of Circulation and Medical Imaging. He received his MD and PhD at the University of Oslo, Norway, and had a postdoctoral fellowship at Harvard University, Massachusetts, U.S.A.