John J. Kastner Jr.



Mr. Kastner’s diverse practice enables him to assist clients with a wide range of legal needs. He primarily represents insurance carriers and self-insured companies, as well as individual and business insureds, in insurance defense matters.

Areas of Focus
  • Insurance Defense
  • Medical Malpractice
  • Commercial Litigation
  • Labor and Employment Litigation
  • Personal Injury Defense
  • Legal Professional Liability Defense

J.D., Hamline University School of Law (1996)

  • cum laude

B.A., University of Wisconsin (1991)


Mr. Kastner’s areas of expertise include vehicle accidents, securities fraud, defamation, employment discrimination, personal injury, and wrongful death. He also has experience in premises liability, civil rights defense, and legal professional liability, representing claimants and defendants. In addition, Mr. Kastner represents governmental entities and municipalities in a wide range of defense matters, such as motor vehicle liability and Section 1983 claims.

Having served as a Judge Pro Tem for the Pima County Superior Court, he has first-hand knowledge of the court’s policies and procedures, as well as insight into the best course of action to resolve an issue.

Mr, Kastner is AV Preeminent® Peer Review Rated rated by Martindale-Hubbell, representing the highest rating in legal ability and ethical standards. He is an active member of the Federation of Defense & Corporate Counsel (FDCC), an organization comprised of leaders in the insurance and corporate defense bar. Since 2015, Mr. Kastner has served on the Local Rules of Practice Advisory Committee for the Federal District Court of Arizona.


Admitted to Practice

  • Arizona (2002)

Published Opinions

  • US Airways, Inc. v. Qwest Corp., 238 Ariz. 413, 421, 361 P.3d 942, 950 (Ct. App. 2015), review granted in part (Sept. 20, 2016), aff’d in part (Nov. 23, 2016), opinion ordered depublished in part, No. CV-16- 0027-PR, 2016 WL 6892136 (Ariz. Nov. 23, 2016). The Court held that the client, an underground utility locator, did not owe US Airways a duty to protect against US Airways’ $4,000,000.00 in claimed economic damage. As a matter of law, and because the utility locator did not owe a duty, the negligence claim against the locator failed.

Media and Presentations


  • “Reasonableness of Medical Charges,” Tucson Defense Bar Association (2017)
  • “Can I Settle My Personal Injury Case?,” Pima County Bar Association (2014)
  • “Dram Shop Claims: Perspectives from the Plaintiff,” Tavern and Criminal Defense, State Bar of Arizona (2013)
  • “Arizona Biennial Case Law, Procedure & Statute Review,” Tucson Defense Bar Association (2010)
  • “In Search of the Crystal Skull – An Update Regarding Case Law and Court Rules for 2006–2008,” Tucson Defense Bar Association (2008)
  • “Winning Strategies in Summary Jury Trials,” State Bar of Arizona (2007)
  • “Juror Notebooks and the Last 30 Days before Trial,” State Bar of Arizona (2007)


State Bar of Arizona

Tucson Defense Bar Association

Pima County Bar Association

Arizona Association of Defense Counsel

Defense Research Institute

Federal Bar Association

American Bar Association

Minnesota State Bar Association

Federation of Defense and Corporate Counsel

Federal District Court of Arizona, Local Rules of Practice Advisory Committee

Honors and Awards