Dennis M. Hartwig Obituary
We announce the death of Dennis M. Hartwig of Niantic, Illinois, who passed away on June 3, 2026, at the age of 76. Dennis will be remembered by family members, friends, and others whose lives were connected in meaningful ways. Leave a sympathy message to the family on the memorial page of Dennis M. Hartwig to pay them a last tribute.
Dennis will be remembered for the impact he had on the lives of those around him. Friends, family, and colleagues will cherish their memories and the time shared. Those who knew Dennis will remember moments of kindness, warmth, and presence. Though words cannot fully capture his life, the legacy of connections and experiences remains. Dennis’s absence will be deeply felt by those who valued his companionship.
He was loved and cherished by many people including: his parents, Howard Hartwig and Mildred Hartwig (Moore).
In Lieu of flowers, the family requests memorial donations be made in Dennis's honor to the Niantic United Methodist Church or the Sangamon Valley Track & Field Program.
