Assistant Chief Diana Duffy


A native of Tucson, Arizona, Assistant Chief Diana Duffy came to the Tucson Police Department in January of 2000 after attending the University of Arizona. She graduated from Park University in 2018 with a Bachelor of Arts in Social Psychology. She has also completed the Senior Management Institute for Police and the Southwest Leadership School and Executives in Government School from Eller College at the University of Arizona as well as attending the Public Information Training Institute and Crisis Intervention School.


Assistant Chief Duffy oversees the Patrol Services Bureau. Prior to being promoted to Assistant Chief in 2022, she served as the Division Commander for the Southern Arizona Law Enforcement Training Center (SALETC), where she led efforts to re-think training concepts and provide innovative training to new recruits. In addition, she focused on developing tailored reintegration sessions and extensive use of force policy articulation and training for all department members, based on best practices, lessons learned, and community expectations.

Prior to her assignment at SALETC, as a captain, she oversaw the Operations Division West Patrol and Traffic Divisions. As a lieutenant, she served as the Office of Professional Standards Commander, Violent Crimes Commander, Communications Division Commander, and the Downtown and Eastside Patrol Division Commander. As a sergeant, detective, and officer, she served as the Public Information Sergeant as well as a Midtown and Downtown Division Sergeant. She was a Neighborhood Crimes Detective in Operations Division West. And, as a patrol officer, she worked in Operations Division West. She also worked as the Community Resource Officer and was part of the Community Response Team that worked on criminal activity and quality of life concerns.

Personal Interests

As a single mother of three kids for most of her career, much of Assistant Chief Duffy’s volunteer work consisted of helping with her children’s sporting events and school activities. She also volunteers with the Boys and Girls Club afterschool program. Now that all three of her children are adults, she enjoys traveling with her husband.