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Lon J. Kouri

(605) 336-2565lkouri@mayjohnson.com

Lon Kouri, a native of Sioux Falls, South Dakota, attended Augustana College and graduated with honors. He graduated from the University of South Dakota Law School, serving as an Editor of the South Dakota Law Review.

Lon joined the law firm of May & Johnson, P.C. in 1980. He is the senior attorney in the Litigation Section, where his practice has been devoted to civil litigation, with an emphasis on insurance defense, insurance litigation, and professional liability defense. His clients include several major insurance companies in the United States. Lon is a member of the American Board of Trial Advocates, the International Association of Defense Counsel, and the Defense Research Institute, the largest organization of defense attorneys in the country. He is the past President of the South Dakota Defense Lawyers Association and was honored to serve as the South Dakota Representative to the Defense Research Institute. Lon was selected for inclusion in Great Plains Super Lawyers and has also been named in "Best Lawyers in America".

In addition to his litigation practice, Lon is a trained and certified mediator. He has mediated over 500 civil disputes and now mediates over 150 disputes per year. He has successfully mediated a wide variety of civil claims, including class action lawsuits, wrongful death actions, catastrophic injury actions, medical malpractice and professional negligence claims, complex multiparty construction claims, commercial and business disputes, including shareholder claims and first party insurance bad faith claims. As part of his neutral practice, Lon also has arbitrated numerous civil claims in various areas including personal injury, medical malpractice, labor contracts and construction disputes.

Lon is a member of the American Academy of ADR Attorneys and is certified by the Academy as a mediator/arbitrator. He is also a member of the International Academy of Dispute Resolution and is a past chairman of the South Dakota Bar Association Committee on ADR.

Areas of Practice

  • Mediation/Alternative Dispute Resolution
  • Civil Litigation
  • Insurance Defense
  • Insurance Litigation
  • Professional Liability Defense
  • Construction Law

Bar Admissions

  • South Dakota
  • U.S. District Court District of South Dakota
  • U.S. Court of Appeals 8th Circuit


  • University of South Dakota School of Law, Vermillion, South Dakota
  • Augustana College, With Honors

Honors and Awards

  • Best Lawyers in America
  • Great Plains Super Lawyers
  • Martindale-Hubbell Law Directory -- A.V. Rated
  • Defense Research Institute Exceptional Performance Citation
  • Defense Research Institute State Leadership Award

Professional Associations and Memberships

  • Second Judicial Circuit Bar Association, 1990 - 1991 President
  • State Bar of South Dakota
  • American Board of Trial Advocates
  • South Dakota Defense Lawyers Association, 1996 - 1997 President
  • South Dakota Defense Lawyers Association, 1994 - 2001 Board of Governors
  • Defense Research Institute, 1999 - 2002 South Dakota Representative
  • International Association of Defense Counsel
  • American Academy of ADR Attorneys
  • International Academy of Dispute Resolution
  • National Academy of Distinguished Neutrals - SD Chapter
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