• J.D., University of North Carolina School of Law
  • B.A., Colorado College
    • Political Economy
    • Cum laude
  • Fluency in Spanish

In a profession where linear thinking can be the norm, Mark Williams is distinct. His around-the-corner thinking, along with more than 35 years of practice experience enable him to use his energy to change the future for his clients.

Mark’s personable approach, whether you’re a client or a colleague, makes him a trusted and loyal adviser with a reputation for taking tough, unique situations and simplifying them to get results.

He provides guidance to large national and international corporations, regional businesses and entrepreneurial ventures on wide-ranging litigation, general business, and transactional matters.

Mark serves as trial counsel and adviser on large-figure, corporate governance, officer and director liability, business tort, commercial, financial institution, and telecommunications matters. He represents clients in federal and state trial and appellate courts, as well as in arbitrations and mediations. He acts as counsel to clients facing regulatory proceedings before federal, state, and local government agencies. Regarded for his knowledge, skill, and reputation for fairness, he is also frequently selected as an arbitrator in complex cases.

He also provides strategic business advice and conducts legal audits, risk assessments, internal investigations, and litigation analysis.

Mark helps clients achieve workable solutions to business disputes. He takes a proactive approach when advising clients, devising strategies to manage risk and help clients achieve economic predictability, value, and results.

When Mark is faced with a new matter, his primary focus is the result his client needs. He envisions the outcome and works his way backward to determine the most effective and efficient strategy. As both a trial lawyer and adviser, Mark is often retained because of his ability to help clients steer clear of risk and toward success in their dealings. He is focused on getting results in a professional, ethical, strategic, and efficient manner. He is a trustworthy and loyal advocate to his clients, friends, and family.

Regarded as a leader and mentor in the field, he has been recognized by Best Lawyers in America as a “Lawyer of the Year” in the areas of Technology Law and Communications Law. He has also been designated as a Master Advocate by the prestigious National Institute for Trial Advocacy (NITA), NITA’s highest designation.


  • Serves as trial counsel and advisor on large dollar, corporate governance, officer and director liability, business tort, commercial, and telecommunications cases.
  • Advises on corporate governance and business strategy.
  • Represents clients in regulatory proceedings before federal, state, and local agencies.
  • Acts as lead counsel and negotiator on large transactions.
  • Conducts and advises on internal investigations.
  • Conducts risk assessment, litigation analysis, and legal audits.
  • Advises and serves as regional counsel to personal wireless services provider on federal and state legal and regulatory matters, local land use, zoning, real estate, and risk management issues.
  • Serves as outside counsel to national, regional, and community banks.
  • Conducted hundreds of workout situations for banks and creditors.
  • Served as counsel to banks and commercial clients in advisory proceedings in bankruptcy courts in the western United States.
  • Represents clients in large class actions in the U.S. District Court for the District of Colorado and the U.S. Bankruptcy Court for the District of Delaware.
  • Represented commercial clients in purchasing assets and negotiating contracts during the bankruptcy process.

Publications & Presentations




Professional Activities

  • Metro Denver EDC, Executive Committee senior co-chair
  • Denver Sports Commission, board chair
  • Colorado Bar Association, Communications and Technology Law section Chair (2023 – 2024)
  • American Arbitration Association, Commercial Panel of Neutrals
  • National Association of Corporate Directors, Governance Fellow
  • Litigation Counsel of America, Senior Fellow
  • Diversity Law Institute
  • The Trial Law Institute
  • Federal Communications Bar Association
  • Electric Cooperative Bar Association
  • American Bar Association
  • Colorado Bar Association
  • Denver Bar Association


  • Greater Colorado Council of the Boy Scouts of America, Board of Trustees Executive Vice President
  • Rotary Club of Lower Downtown Denver, past President


  • AV Rated, Martindale-Hubbell,  (1995 – present)
  • Best Lawyers in America
    • “Lawyer of the Year,” Technology Law, Denver (2016, 2018, 2022, 2024)
    • “Lawyer of the Year,” Communications Law, Denver (2015, 2019)
    • Arbitration, Denver (2013 – 2024)
    • Banking and Finance Law, Denver (2013 – 2024)
    • Communications Law, Denver (2007 – 2024)
    • Corporate Law, Denver (2024)
    • Litigation: Regulatory Enforcement [SEC, Telecom, Energy], Denver (2019 – 2024)
    • Technology Law Denver (2007 – 2024)
  • Super Lawyers
    • Business Litigation, Colorado (2006 – 2024)
    • “Top 100 Attorneys,” Colorado (2016)
  • Best Arbitrator 2023, People’s Choice, Law Week Colorado
  • 5280 Magazine
    • “Top Lawyer,” Communications, Technology & Media, Denver (2015 – 2016)
    • “Top Lawyer,” Civil Litigation (2022 – 2023)
  • “Master Advocate,” National Institute for Trial Advocacy
  • Litigation Counsel of America, Senior Fellow (2008 – present)
    • Order of Justitia, Barrister
    • Order of Certus, Advocate
  • Leadership Denver (2000 – 2001)