John J. Kastner Jr.


Mr. Kastner’s practice is anchored in his belief that there is no substitute for hard work. He approaches all of his cases with that mantra in mind.


Mr. Kastner’s practice is anchored in his belief that there is no substitute for hard work. He approaches all of his cases with that mantra in mind.

Based in Tucson, Kastner is a trial attorney whose practice extends throughout Arizona and encompasses insurance defense, insurance coverage, premises liability, municipal liability, catastrophic injury and wrongful death, commercial liability and professional negligence.

Kastner represents insurance carriers in first-party claims. He also represents self-insured businesses and individuals. His experience representing both insureds and insurers provides him with a unique perspective that is further diversified by his tenure as Judge Pro Tem for the Pima County Superior Court.

Kastner is AV Preeminent Peer Review rated by Martindale-Hubbell, representing the highest rating in legal ability and ethical standards. He is also recognized by Best Lawyers as one of the top attorneys in his field.  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. He currently serves on the Local Rules of Practice Advisory Committee for the Federal District Court of Arizona.


Admitted to Practice

  • Arizona
  • Minnesota (Inactive)
  • U.S. District Court, District of Arizona
  • U.S. Court of Appeals, 9th Circuit

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.

Representative Engagements

  • Successfully defended a general construction contractor against a multi-million dollar water damage claim.
  • Representation of hospitals and health care providers.
  • Representation of multiple trucking companies and commercial vehicle based businesses against all types of claims and disputes.
  • Successfully defended construction companies against claims for both personal injury and property damages.
  • Successfully defended an underground utility locator against a multi-million dollar lawsuit resulting in judgment in favor of the client.
  • Representation of municipal entities against all types of claims including a defense verdict in favor of a client after a jury trial on the plaintiff’s hostile work environment claim.
  • Representation of plaintiffs in catastrophic injury and wrongful death claims.
  • Representation of clients in a wide range of civil litigation matters.

Media and Presentations


  • “Personal Injury Update: Court Settlement Conferences, Private Mediations, and the Practical Application of the New Civil Rules,” State Bar of Arizona (2019)
  • “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)


Federation of Defense and Corporate Counsel (FDCC)

Claim Litigation & Management Association (CLM)

Tucson Defense Bar Association

Pima County Bar Association

Arizona Association of Defense Counsel

Arizona State Bar

Defense Research Institute

Federal Bar Association

American Bar Association

Minnesota State Bar Association

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

Honors and Awards