Moser was born on Jan 4, 1962 in Fosnavåg, on a coastal island north of Bergen, Norway. She married Edvard Moser as a student of the University of Oslo in 1985. They had two kids, Isabel and Ailin. The Mosers were directors and coordinators of the Kavil Institute for systems Neuroscience and the Centre for Neural Computation at the Norwegian University of Science and Technology for many years, but they divorced in 2016.