Belleville: 618-234-9800 | Edwardsville: 618-656-2244 | ST. LOUIS: 314-421-2325
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Legal Assistant: Jessica Wiemers



  • University of Kentucky – J.D. 1973
  • University of Illinois – B.A. 1970

Legal Services

  • Criminal Defense (White Collar)
  • Appellate Law
  • Civil Litigation

Bar Admissions

  • Illinois

Court Admissions

  • United States Supreme Court
  • United States District for the Southern District of Illinois
  • Seventh Circuit Court of Appeals

Clyde L. Kuehn


Clyde L. Kuehn serves clients in the areas of white collar criminal defense law, civil litigation and appellate work from the Belleville, Illinois, Mathis, Marifian & Richter office. 

Clyde has had a remarkable impact on the law community, and his honors reflect just that. Specifically in criminal defense law, his career highlights include receiving the 2016 Lifetime Achievement Award from the Illinois Association of Criminal Defense Lawyers and his appointment as chairman of the Complex Litigation Committee in Chicago. Clyde became St. Clair County’s youngest State’s Attorney when he was elected in 1976 at age 27. As the State’s Attorney, he served as a charter board member of the Appellate Service Commission. 

In 1980, he embarked upon a successful private practice of law. His seven defendants in federal criminal jury trials were all acquitted of every count. On the state level, though he has not earned a perfect record defending criminal cases, his number of defeats can be counted on one hand. During Kuehn’s 10 years as the St. Clair County Public Defender and his 11 years as a Circuit Judge and an Appellate Justice, he was known for handling exceptionally difficult cases all the while keeping his commitment to justice.

Professional Affiliations
Clyde is a proud member of the Illinois State Bar Association. He has been a member of the State’s Attorney’s Association where he previously served as Vice President.