Gregory A. McDonnell

Gregory A. McDonnell is a partner at Orr McDonnell Law, PLLC in Missoula, Montana. Gregory focuses on personal injury, wrongful death, civil litigation, real estate law, business law, and insurance bad faith. The practice serves injured people, businesses, property clients, and others involved in civil disputes or transactions and includes tort cases, contract and real estate matters, small-business issues, insurance disputes, and general civil litigation.

Gregory earned a Juris Doctor from the University of Montana School of Law, an M.B.A. from the University of Montana School of Business, and a B.S. in Business Administration from the University of Montana. He completed the J.D. and M.B.A. through a joint-degree program and received a Clinical Student Award from the law-school faculty.

Gregory previously practiced at Datsopoulos, MacDonald & Lind and later joined Thomas Orr, with whom he formed Orr McDonnell Law in 2021. He also serves in the Montana Army National Guard as a Judge Advocate and has been approved by the Montana Supreme Court to serve periodically as a substitute judge for Missoula Municipal Court. That experience gives Gregory practical perspective on personal injury matters, including how facts, procedure, documentation, and negotiation strategy can affect the available legal options.

Gregory A. McDonnell was selected for The National Trial Lawyers Top 40 Under 40 in the civil plaintiff category in 2024. His practice combines civil litigation, business training, military legal service, and courtroom experience across state and federal forums. Across these matters, Gregory emphasizes careful preparation, clear communication, and practical judgment while keeping the legal consequences and the client’s underlying objectives in view.

Law Office Affiliations

• Partner, Orr McDonnell Law PLLC
• Member, State Bar of Montana
• Member, Western Montana Bar Association
• Member, Montana Trial Lawyers Association
• Member, Western Montana Military Officers Association

Licensed State

• Montana

Education

• University of Montana, School of Law
  Juris Doctor (JD)
• University of Montana, School of Business
  Master of Business Administration (MBA)
• University of Montana
  Bachelor of Science (BS) in Business Administration

Awards & Badges