Don Tarkington is a senior trial lawyer with over 30 years of experience litigating high-profile matters and resolving disputes for clients ranging from Fortune 500 companies to closely held businesses.

Don has built a reputation for understanding and creatively achieving his clients’ business objectives through litigation, arbitration or settlement. He has been entrusted by clients in diverse industries to represent them as plaintiffs and defendants in multimillion-dollar matters and in disputes which threaten the existence of their business. He has successfully represented businesses and individuals in disputes concerning breach of contract, intellectual property, real estate, professional liability and closely held businesses.

Don has repeatedly been recognized as one of the top commercial litigators in Illinois by Super Lawyers Magazine and The Leading Lawyers Network. Since 2017, he has been named one of The Best Lawyers in America® by U.S. News & World Report and Best Lawyers Magazine. The publication named Don its Real Estate Litigation "Lawyer of the Year" in Chicago in 2018 and again in 2023. Receiving this designation reflects the high level of respect a lawyer has earned among other leading lawyers in the same community and the same practice area for their ability, professionalism and integrity.

In addition, Don serves as office managing attorney for the firm's Chicago office.


Don was previously managing partner at Novack and Macey in Chicago and joined Armstrong Teasdale in 2023.


  • Northwestern University School of Law  (J.D., 1983)
    • Miner Moot Court Competition, First Place
    • William Jennings Bryan and Lowden-Wigmore Prize for Excellence in Oral and Written Advocacy
    • National Moot Court Competition Representative
  • Indiana University  (B.S., 1978)


  • Illinois
  • U.S. District Court, Northern District of Illinois

Charitable and Civic Involvement

  • Evanston/Skokie (Illinois) Consolidated School District 65 Board of Education (Former Member; Finance Committee, Chair; Referendum Committee, Co-chair)
  • Foundation 65 (Founding Member and Past President)
  • McGaw YMCA (Former member of Board of Directors)
  • McGaw YMCA Children’s Center (Former Long-range Planning Committee, Chair)


  • Illinois Super Lawyers®, Business Litigation (2005-present)
  • Illinois Leading Lawyers (2004)
  • The Best Lawyers in America®, Real Estate Litigation (2017-present); Commercial Litigation (2023-present); “Lawyer of the Year” for Real Estate Litigation (2018 and 2023)
Contact Us
  • Worldwide
  • Boston, MA
  • Chicago, IL
  • Denver, CO
  • Dublin, Ireland
  • Edwardsville, IL
  • Jefferson City, MO
  • Kansas City, MO
  • Las Vegas, NV
  • London, England
  • Miami, FL
  • New York, NY
  • Orange County, CA
  • Philadelphia, PA
  • Princeton, NJ
  • Salt Lake City, UT
  • St. Louis, MO
  • Washington, D.C.
  • Wilmington, DE
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Boston, MA
800 Boylston St.
30th Floor
Boston, MA 02199
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Boston, Massachusetts
Chicago, IL
100 North Riverside Plaza
Suite 1500
Chicago, IL 60606-1520
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Chicago, Illinois
Denver, CO
4643 S. Ulster St.
Suite 800
Denver, CO 80237
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Denver, Colorado
Dublin, Ireland
Fitzwilliam Hall, Fitzwilliam Place
Dublin 2, Ireland
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Edwardsville, IL
115 N. Second St.
Edwardsville, IL 62025
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Edwardsville, Illinois
Jefferson City, MO
101 E. High St.
First Floor
Jefferson City, MO 65101
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Jefferson City, Missouri
Kansas City, MO
2345 Grand Blvd.
Suite 1500
Kansas City, MO 64108
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Kansas City, Missouri
Las Vegas, NV
7160 Rafael Rivera Way
Suite 320
Las Vegas, NV 89113
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Las Vegas, Nevada
London, England
Royal College of Surgeons of England
38-43 Lincoln’s Inn Fields
London, WC2A 3PE
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Miami, FL
355 Alhambra Circle
Suite 1200
Coral Gables, FL 33134
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New York, NY
7 Times Square, 44th Floor
New York, NY 10036
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New York City skyline
Orange County, CA
19800 MacArthur Boulevard
Suite 300
Irvine, CA 92612
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Philadelphia, PA
2005 Market Street
29th Floor, One Commerce Square
Philadelphia, PA 19103
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Philadelphia, Pennsylvania
Princeton, NJ
100 Overlook Center
Second Floor
Princeton, NJ 08540
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Princeton, New Jersey
Salt Lake City, UT
222 South Main St.
Suite 1830
Salt Lake City, UT 84101
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Salt Lake City, Utah
St. Louis, MO
7700 Forsyth Blvd.
Suite 1800
St. Louis, MO 63105
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St. Louis, Missouri
Washington, D.C.
1717 Pennsylvania Avenue NW
Suite 400
Washington, DC 20006
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Wilmington, DE
1007 North Market Street
Wilmington, DE 19801
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Wilmington, Delaware