Regina L. Nassen

Principal Assistant Tucson City Attorney

Tucson City Attorney's Office

Regina L. Nassen joined the Tucson City Attorney’s Office as a Principal Assistant City Attorney in 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, Ms. Nassen 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 an associate in the Tucson office of Snell & Wilmer from 1993 to 2000. Ms. Nassen 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 from 2019 through 2023. She is a member of the ABA’s Center for Professional Responsibility CLE Committee, a Sustaining Life 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. Ms. Nassen graduated summa cum laude from the University of Arizona James E. Rogers 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.