5217 S 51st St, Greenfield, WI 53220


Justin G. Griffis, Attorney

 Attorney Justin Griffis attended the University of Dayton in Ohio and received a B.A. in Political Science. While at UD, he was a member of the Dayton Flyers Football Team.

After graduating, Justin continued his education at the University of Dayton School of Law (UDSL). During his academic career, Justin received CALI awards in Appellate Advocacy, Criminal Trial Advocacy, and The Jury. He was awarded the honor of Best Appellee’s Brief in the 2013 Walter H. Rice Moot Court Competition and was admitted to the Order of Barristers by members of the UDSL faculty in recognition of his commitment to appellate advocacy. As a member of Moot Court, Justin represented the University of Dayton School of Law in the Brooklyn Law School’s Dean Jerome Prince Memorial Evidence Competition in Brooklyn, New York.

After passing the Ohio Bar Exam, Justin began his legal career as an associate attorney at the Dayton-area law firm of Roberts, Kelly & Bucio LLP where he practiced criminal defense. In 2016, Justin became a partner at a law firm in his hometown where he handled all criminal law matters. Other areas of Justin’s law practice included probate, adoptions, corporate law, landlord-tenant law, real estate, and contracts.

He was admitted to the Wisconsin State Bar in 2019 and joined a Brookfield-based criminal defense law firm where he continued to practice criminal defense. In 2022, Justin left that firm and joined the Waukesha County State Public Defender’s Office as a trial attorney. In 2023, Justin left the Public Defender’s Office and joined the Konstantakis Law Office, LLC.

Justin is a skilled litigator who zealously advocates on behalf of his clients.

Atty Justin Griffis Milwaukee DUI Lawyer


  • University of Dayton, Political Science B.A.
  • University of Dayton School of Law, J.D.

Bar Admissions

  • Wisconsin Bar Admission
  • Ohio Bar Admission
  • U.S. District Court Southern District of Ohio
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