Mark J. Dahl, 63, of Duluth, passed away December 4, 2017. Mark was a 1972 graduate of Denfeld High School and went on to earn a master’s degree from the University of Minnesota. He was preceded in death by his parents, Arthur and Carol Dahl. Mark is survived by his brother, David (Nancy); nephews, Jeremy and Dan (Cassie): and niece, Katie (Chad) Pollak. Visitation 1 until the 2 p.m. memorial service Saturday, January 13, 2018 at Williams Lobermeier Boettcher Funeral Home.