Decision Maker

John Kellner

Former CO District Attorney

District 18, Colorado

John Kellner is a distinguished American legal professional with a robust background in both military and civilian law. He holds a Bachelor’s degree in Finance from the University of Florida's Warrington College of Business and a Juris Doctor from the University of Colorado. Kellner has served as a Major and Reserve Trial Counsel in the United States Marine Corps Reserve, showcasing his commitment to public service and leadership. His legal career includes roles as Deputy District Attorney in Boulder County and Chief Deputy District Attorney in Colorado’s District 18. Additionally, he has contributed to legal education as an Adjunct Professor at the University of Denver's Sturm College of Law. Kellner's diverse experiences highlight his dedication to justice and education.