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Matthew J. Mankey

Attorney Profile

Top Rated Criminal Defense Attorney in Golden Valley, MN

Mankey Law Office
5500 Wayzata Blvd, Suite 1025
Golden Valley, MN 55416
Phone: 763-560-4388
Fax: 763-591-1653
Selected to Super Lawyers: 1999 - 2000, 2003, 2007, 2021 - 2022
Licensed in Minnesota Since: 1992
Practice Areas: Criminal Defense
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Attorney Profile

Matthew J. Mankey is the founder of the Mankey Law Office where, as a sole practitioner, he focuses exclusively on criminal defense matters. Located in Golden Valley, Minnesota, he represents clients throughout the greater Twin Cities metropolitan area and other parts of the state. Mr. Mankey has been admitted to practice in Minnesota since 1992, and in the following year he was admitted to practice before both the U.S. District Court for the District of Minnesota and the U.S. Court of Appeals for the 8th Circuit.

Mr. Mankey’s client serves those who have been accused by the state or federal government of committing misdemeanor or felony offenses. The types of charges that he has helped his clients face include sexual assault, driving under the influence of alcohol, weapons violations, drug possession and distribution, theft, burglary, juvenile offenses, tax fraud, counterfeiting, extortion, blackmail, bribery, and bank robbery. Mr. Mankey’s clients have benefitted from his extensive experience in obtaining charge dismissals, bench and jury acquittals, and the negotiation of favorable plea agreements with the prosecution, and this successful track record has earned him several honors and awards from his colleagues, including an AV Preeminent* peer-review rating through Martindale-Hubbell and a 10.0 “Superb” peer-review rating through Avvo.

Mr. Mankey’s academic credentials are quite impressive as well. After majoring in government and history at Saint John’s University in Minnesota, he spent a year abroad studying international affairs at the University of Salzburg before returning to the U.S. and receiving a Bachelor of Arts. He is also a cum laude graduate of what was then known as the William Mitchell College of Law. 

*AV®, AV Preeminent®, Martindale-Hubbell Distinguished and Martindale-Hubbell Notable are certification marks used under license in accordance with the Martindale-Hubbell certification procedures, standards and policies. Martindale-Hubbell® is the facilitator of a peer review rating process. Ratings reflect the anonymous opinions of members of the bar and the judiciary. Martindale-Hubbell® Peer Review Rating™ fall into two categories – legal ability and general ethical standards. 

Practice Areas
  • 100%Criminal Defense
Focus Areas

Arrest & Arraignment, Criminal Law, Drug & Alcohol Violations, Expungement, Felony, Juvenile Delinquency, Misdemeanor, Motor Vehicle Offenses, Murder, Probation, Sex Offenses, Theft, Criminal Domestic Violence


6 Years Super Lawyers
  • Super Lawyers: 1999 - 2000, 2003, 2007, 2021 - 2022

About Matthew J. Mankey

First Admitted: 1992, Minnesota

Professional Webpage:

Bar/Professional Activity

  • Minnesota State Bar Association, Member, 1992 to present.
  • Mr. Mankey has had the opportunity to serve as a conflict attorney on the CJA panel since 1997., 2021
  • National Association of Criminal Defense Lawyers, Member, 1997 to 2013
  • Minnesota, 1992
  • U.S. Court of Appeals 8th Circuit, 1993
  • U.S. District Court District of Minnesota, 1993


  • , Super Lawyer, 2003 - 2005, 2007, 2021

Educational Background

  • He earned a Master's Degree in International Affairs from the American University in Washington, DC in 1985
  • St. John's University, B.A., Major: Government, History, Minor: Philosophy, 1980

Other Outstanding Achievements

  • Mr. Mankey filed multiple memorandum that resulted in a 5.5 hour Franks Hearing. The Report and Recommendation was nearly 50 pages., 2020

Pro bono/Community Service

  • Mr. Mankey routinely handles appeals on behalf of the State Public Defender where prosecutors appeal the suppression of evidence. The firm accepts approximately 4-5 cases per year, writes the briefs and argues at the Court of Appeals., 2020
  • Mr. Mankey resolved 3 state cases for a federal CJA client out of Georgia, Indiana, and Minnesota. He also worked with the federal client to re-establish his representation with the Minnesota Public Defender on another case. All the warrants and open cases would have had an impact on his plea and his Bureau of Prison designation and his "out date" when the time came. , 2021

Scholarly Lectures/Writings

  • Immigration Consequences of Criminal Convictions, National Immigration Lawyers Association, Lecturer, Crimigration 101, Crimial Defense, Immigration, 2021
  • Admittedly, alleged child sex abusers enjoy little public sympathy. But all are presumed innocent until proven guilty by a system that vigorously defends the accused, no matter how heinous the allegations. Confrontation is designed to elicit the truth which is at the bedrock of our individual liberties and hence our democracy because it is only through the diligent representation of the accused, that the rights of average citizens are protected. Understandably, judges want to protect children as they are our most vulnerable citizens but they cannot do so at the expense of our constitutional rights. The simple test of what is testimonial and what isn’t should be the cornerstone of every analysis. This would lead to predictability for criminal defendants and prosecutors alike., Co-Author, CHILD SEX ABUSE AND THE SIXTH AMENDMENT, Criminal Defense, Criminal Sexual Conduct, Sith Amendment, 2020
  • Immigration Consequences of Criminal Convictions, National Immigration Lawyers Association, 2011 to 2012
  • Sandinista Development Programs and the Contra War, University of Michigan Microfilms, International Development, 1979 - 1985


  • Mr. Mankey diligently reviewed charges of Criminal Vehicular Operation - Substantial Body Harm and DWI. He was able to get CVO charged dismissed based on the level of injury the passenger received. The DWI resulted in a sentence of time served, a $500 reduction of fine is MADD panel was completed, and unsupervised probation. , 2021
  • Mr. Mankey was able to have a domestic assault case dismissed by the prosecutor in Wright County., 2021
  • Mr. Mankey represented a client charged with two felony drug charges and receiving stolen property (firearm). The final disposition was dismissal of one of the drug charges and the receiving stolen property. The client received a stay of adjudication on one drug charge., 2021
  • A client was involved a semi/car accident. He was charged with Criminal Vehicular Homicide - Operate Motor Vehicle in Grossly Negligent Manner, Criminal Vehicular Operation - Great Bodily Harm - Gross Negligence, and Traffic - Reckless driving; Drives Consciously Disregarding a Substantial or Unjustifiable Risk. Mr. Mankey negotiated his sentance whereby the client (who caused the death of one person and seriously injured another) received a staggered sentenced of 120 to be served 30 days per year for 4 years. But the sentencing in years 2, 3, and 4 can be waived if the defendant is in compliance with his probationary conditions., 2020
  • Mr. Mankey got a criminal sexual conduct in the first degree case dismissed on the first day of trial., 2020
  • Mr. Mankey represented a client being charged with a felony level marijuana charge. He got the charges dismissed., 2020
  • DWI. Mr. Mankey convinced the prosecutor to dismiss the criminal case. He litigated and WON the Implied Consent. He kept the clients driving record clean and he was able to keep his job., 2019
  • Mr. Mankey obtain dismissals of 2 counts of Threats of Violence-Reckless Disregard Risk. The client was accused of brandishing a firearm that he allegedly had in his belt while unloading building supplies at his house., 2018
  • Mr. Mankey represented a client in federal court charges with Conspiracy to Possession with Intent to Distribute heroin. He was facing 293 months in prison. Mr. Mankey worked diligently to get his sentenced reduce. His client got 36 months., 2018
  • Mr. Mankey represented a client charged in federal court with drug possession/conspiracy to possess with intent to distribute. His sentencing guideline was 120 months. At sentencing the government sought to increase the penalty by alleging that the defendant dealt drugs with on pre-trial release. Mr. Mankey disproved the government's case through cross examination of the agent. Mr. Mankey got the defendant 36 months., 2018
  • In 2017, Mr. Mankey represented a federal client charged with Insurance Fraud. He got the government to amend the charge to Misprision of a Felony. The government wanted 36 months. Mr. Mankey got him probation only., 2017
  • Mr. Mankey also recently obtained a dismissal of firearm charges in a case involving a client with a carry permit who left his firearm in a movie theater and was charged with negligence for so doing. Mr. Mankey argued that there was not probable cause for the charge and the case was dismissed at a preliminary stage of the proceeding., 2017
  • Most recently Matthew Mankey obtained a not guilty verdict in federal court in Duluth, Minnesota on charges of Aggravated Sexual Assault of a Child Under the Age of 12., 2017
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Office Location for Matthew J. Mankey

5500 Wayzata Blvd
Suite 1025
Golden Valley, MN 55416

Phone: 763-560-4388

Fax: 763-591-1653

Last Updated: 5/15/2022

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