Jill Gannon-Nagle

Jill Gannon-Nagle is a criminal defense lawyer serving clients in Dillon, Montana. She represents clients facing misdemeanor and felony charges in state and federal courts. Her criminal practice includes DUI defense, drug crimes, domestic violence allegations, juvenile matters, expungement, and restoration of rights. She also handles civil litigation, family law, estate matters, business concerns, and mediation for clients throughout Southwest Montana.

Jill earned a Bachelor of Arts from Montana State University Billings and a Juris Doctor from Thomas M. Cooley Law School. She was admitted to practice in Washington in 2007 and Montana in 2016. Her legal education prepared her to analyze evidence, build trial strategies, and explain complex procedures in understandable terms. This background supports her work with clients facing serious charges, contested hearings, and difficult courtroom decisions.

Jill spent more than ten years representing individuals as a state and federal defender. Her courtroom experience ranges from misdemeanor traffic offenses to a five-week triple homicide trial. She has handled cases involving serious felonies, DUI allegations, juvenile offenses, and other criminal accusations. That defense background helps her evaluate investigations, challenge evidence, negotiate resolutions, and prepare cases for trial when necessary.

Jill Gannon-Nagle has earned professional recognition for her courtroom work and commitment to clients. She applies careful preparation, direct communication, and practical judgment to every matter. Her approach considers each client’s goals while protecting constitutional rights throughout the legal process. By combining extensive defender experience with community-based service, she helps clients understand their options and make informed decisions during stressful proceedings.

Law Office Affiliations

• Attorney, JGN Law Office, LLC
• Member, State Bar of Montana
• Member, Washington State Bar Association

Licensed State

• Montana
• Washington

Education

• Thomas M. Cooley Law School
  Juris Doctor (JD)
• Montana State University Billings
  Bachelor of Arts
  

Awards & Badges