Regina L Nassen

Principal Assistant City Attorney

Regina Nassen has been a Principal Assistant City Attorney in the Tucson City Attorney’s Office since August 2021 after almost 18 years as a Deputy County Attorney in the Civil Division of the Pima County Attorney’s Office (“PCAO”). While at PCAO Regina also served as the Supervising Attorney of the Civil Division’s Business & Transactions Unit and as PCAO’s Chief Ethics Counsel. Prior to becoming a government lawyer, she was in private practice as an Associate with Snell & Wilmer from 1993 to 2000.

Regina recently received the State Bar of Arizona’s 2024 Member of the Year Award. She is currently a member of the Arizona Commission on Judicial Conduct and previously served on the Arizona Supreme Court’s Ethics Advisory Committee, 2019 through 2023. She is a member of the ABA’s Center for Professional Responsibility CLE Committee, a fellow of the American Bar Foundation, and a member of the governing council of the ABA’s Government & Public Sector Lawyers Division. She is also a past Chair of the State Bar of Arizona’s Public Lawyers Section and the recipient of the Section’s 2015 Distinguished Public Lawyer Award.

Regina graduated summa cum laude from the University of Arizona College of Law in 1992, after which she clerked for Justice Frederick Martone on the Arizona Supreme Court before entering private practice. She received her undergraduate degree from the University of Northern Iowa in 1986, summa cum laude, with a double major in Philosophy and Anthropology.