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Viktor A. Theiss

Partner


Administrative Assistant

Colleen Cannon

Viktor A. Theiss specializes in all aspects of domestic relations litigation, including divorce, custody, modification, child support, paternity, prenuptial agreements, probating of wills, and will contests. Additionally, Viktor has been appointed by the Probate and Family Court as a Guardian Ad Litem in divorce and custody dispute matters.

Prior to joining Casner & Edwards, Viktor was a prosecutor at the Suffolk County District Attorney’s Office and was twice promoted; first, to Supervisor of the Roxbury District Court, and then, to Deputy Chief of District Courts where he was responsible for nine District Courts and over 50 assistant district attorneys. He was featured as part of the BBC documentary “Boston Law” that aired on Frontline in 2000.

After more than six years as a prosecutor, Viktor was appointed as the Deputy Superintendent of the Suffolk County Sheriff’s Investigation Division.

Honors & Awards

The Best Lawyers in America – Family Law, 2023-2025

Golden Key Honor Society

awards

  • Massachusetts
  • U.S. District Court for the District of Massachusetts

JD, Northeastern University School of Law
BA, Honors, University of Michigan

  • Member, Boston Bar Association
  • Member, Massachusetts Bar Association

Seminars

  • Presenter, International Women’s Police Chief Association, “Surviving Cross Examination,” 2004
  • Conducted annual Boston University Police Department in-service legal trainings from 1999 – 2005
  • Conducted annual Boston University Police Department in-service legal trainings from 1999 – 2005

News for Viktor

34 Casner & Edwards Attorneys Recognized by The Best Lawyers in America® 2025

31 Casner & Edwards Attorneys Recognized by The Best Lawyers in America® 2024

25 Casner & Edwards Attorneys Recognized by 2023 Best Lawyers in America