HomeAttorneysTessa A. Keller
Tessa A. Keller

Tessa A. Keller

Office: 406-523-2500 | Fax: 406-523-2595
Download: vCard


Tessa specializes in helping businesses succeed by evaluating and minimizing their legal risks, and defending them in all types of business-related claims. This practice includes consultation on a broad range of laws that impact employers, advising about best practices, and conducting workplace investigations.  Within this specialty, Tessa assists cannabis businesses in navigating the complex statutory and regulatory framework specific to that industry.  Tessa also serves as a Title IX Hearing Officer for institutions of higher education.  Additionally, Tessa has a broad civil litigation practice that focuses on defending claims related to employment law, health law, personal injury, business disputes, and class action litigation.

Tessa is a fourth-generation Montanan, and was raised in Plains, Montana.  She attended the University of Montana, and graduated with high honors with Bachelors Degrees in English Education and Spanish.  She attended law school at the University of Oregon, during which time she worked for the Oregon Department of Justice, the public defender’s office, Judge Ann Aiken in the United States District Court for the District of Oregon, and legal aid.  She also served as Articles Editor for the Oregon Law Review.  Tessa then returned to Montana to clerk for Justice Laurie McKinnon at the Montana Supreme Court, and has been with GLR ever since.

Outside of work, Tessa enjoys taking advantage of Montana’s trails, lakes, and rivers with her family and friends.

Honors, Awards and Professional Associations

  • Best Lawyers: Ones to Watch
  • Western Montana Bar Association, Member
  • American Bar Association, Member
  • State Bar of Montana, Member
  • Montana Defense Trial Lawyers, Member


  • University of Oregon School of Law, Eugene, Oregon
    • Juris Doctor
    • Law Review: Oregon Law Review, Articles Editor, 2011 – 2013
  • University of Montana, Missoula, MT
    • Bachelor of Arts
    • Honors: With High Honors
    • Major: English Education, Spanish

Practice Areas

  • Civil Litigation
  • Insurance Defense
  • Business Law
  • Employment Law
  • Product Liability
  • Health Care Law
  • Cannabis Law
  • Title IX Law

Bar Admissions

  • Montana
  • U.S. District Court District of Montana
  • U.S. Court of Appeals 9th Circuit