Hilary Williamson

Hilary Williamson is an attorney with Fuller Williamson Nelson Preheim in Sioux Falls who represents clients in diverse and complex civil lawsuits and disputes. Her practice covers all phases of the litigation process, including motion hearings, jury trials, and appeals. She handles disputes that require detailed legal research, analytical writing, and courtroom advocacy, helping individuals and businesses address contested matters in South Dakota and other courts where she is admitted.

Hilary graduated magna cum laude from the University of Sioux Falls, where she was a Presidential Scholarship recipient, an All-American Cross Country Scholar Athlete, and a Faculty Development Board member. She earned her law degree from the University of South Dakota School of Law with Sterling Honors and served as Lead Articles Editor for the South Dakota Law Review. After law school, she clerked for Justice Judith Meierhenry of the South Dakota Supreme Court.

Hilary has experience handling civil disputes from early case assessment through trial and appellate review. Her background includes written and oral advocacy in matters that can involve business litigation, insurance issues, personal injury, automobile injury, and trust litigation. She is admitted in South Dakota and Minnesota, as well as the Eighth Circuit Court of Appeals and the Flandreau Santee Sioux Tribal Court, giving her a broad litigation platform.

Hilary Williamson became a partner early in her career and is known for strong legal writing and analytical work in trial and appellate matters. She brings a clerkship perspective to complex legal questions and combines detailed preparation with practical advocacy. Her work helps clients understand litigation risks, evaluate procedural options, develop persuasive positions, and move through contested proceedings with a clear strategy grounded in the facts and governing law.

Law Office Affiliations

• Attorney, Fuller, Williamson, Nelsen & Preheim, LLP
• Member, State Bar of South Dakota
• Member, Minnesota State Bar Association

Licensed State

• South Dakota
• Minnesota

Education

• University of South Dakota School of Law
  law degree

Awards & Badges