Lawyer (Law)
Dallas, TX

Marcos G. Ronquillo

Partner | Fishman Jackson Ronquillo

Marcos G. Ronquillo has been recognized as a Distinguished Professional.

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Marcos G. Ronquillo is a highly-celebrated civil trial attorney and community leader based in Dallas, Texas. Currently a partner at the firm Fishman Jackson Ronquillo, he has nearly forty years of experience representing governmental agencies, Fortune 500 companies, and business owners in high-profile controversies where public policy and social concerns collide in the courtroom. Mr. Ronquillo’s practice encompasses a broad range of civil litigation matters, including due diligence projects, government and public affairs, business law, as well as international arbitration and public infrastructure.

Born in Tucson, Arizona, Mr. Ronquillo had a strong sense of duty instilled in him at a young age. He recalls:

I'm Mexican-American, from the south side of Tucson, part of the first generation in my family to go to college and the first to go to law school. My parents always put a high premium on education and doing right by others. The first law firm I joined when I went into private practice also catalyzed my passion for social justice and helping others.

After earning his Juris Doctor from George Washington University School of Law in 1979, Mr. Ronquillo quickly established himself as a skilled attorney and valued member of his community. He began his career working for the U.S. Department of Education’s Office for Civil Rights before going into private practice in 1983. By 1986, Mr. Ronquillo had already served as president of both the Dallas Mexican Bar Association and the Dallas Hispanic Chamber of Commerce.

In the years since Mr. Ronquillo has served in numerous other leadership positions in prominent legal and community organizations and has been widely recognized for his contributions and influence. Notably, he was involved in two initiatives in the 1990s while chairing the State Bar of Texas Committee on Immigration and Nationality Law in which he helped the Texas Bar to provide representation to over 4,000 refugees seeking political asylum. This work earned him the Bar President’s Special Citation Award as well as the Texas Mexican Bar Association’s Outstanding Lawyer of the Year Award.

Today, Mr. Ronquillo is widely regarded as a preeminent practitioner in fields such as international law and minority-owned business enterprises to government affairs and public policy. In particular, he is well versed in municipal bonds and financing and has served as bond counsel to many public entities. Additionally, he authored an influential white paper on public-private partnerships in Texas.

Among many other honors, Mr. Ronquillo was recognized in 2011 by Hispanic Business Magazine as one of the “100 Most Influential Hispanics” in the United States, and by Latino Leaders Magazine with its prestigious “Maestro Award for Leadership.” In 2016, he was selected by the National Association of Distinguished Counsel as the “Nation’s Top One Percent.” Most recently, he was named as one of the most powerful business leaders in the Dallas-Fort Worth area by D CEO in their annual special edition of the Dallas 500.

As a leader in his field, Mr. Ronquillo maintains a unique vantage point on prevailing trends in his many areas of practice. In particular, he notes that he has seen a significant shift away from litigation toward alternative dispute resolution:

Litigation is down, but transactional work is up. Right now, there is robust transactional work being done in international trade and public infrastructure. Both federal and state courts now require that you need to go to mediation before you go to trial. There is a lot of alternative dispute resolution, such as arbitration and mediation—everything and anything you can do to stay out of the courthouse. This is a major change from how things worked when I started practicing law in 1979.

With nearly four decades of successful practice behind him, Mr. Ronquillo is able to take these and other changes in stride. Looking to the future, he intends to continue helping his clients find creative solutions to their legal problems. “First and foremost,” Mr. Ronquillo said, “I consider myself a problem solver.”

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Detailed Career Information | Expand All ⌵


  • George Washington University School of Law (J.D., 1979)
    • Dean Kramer Scholar
    • International and Comparative Law
  • University of Notre Dame (B.A., 1975)
    • Holy Cross Scholarship
    • Government and Latin American Area Studies


  • Texas
  • U.S. Court of Appeals, 5th Circuit
  • U.S. District Court
    • Eastern District of Texas
    • Northern District of Texas
    • Southern District of Texas
    • Western District of Texas
  • U.S. Supreme Court

Areas of Practice

  • Arbitration
  • Government & Public Affairs
  • International Due Diligence
  • Litigation
  • Minority Business Enterprise

Awards & Honors

  • AV® Preeminent™, Martindale-Hubbell®
  • Top 100, Best Lawyers®, Woodward/White (2013-present)
  • Super Lawyers®, Thomson Reuters (2003-present)
    • Top 100 Lawyers in the Dallas-Fort Worth area (2011)
  • Dallas 500, Most Powerful Business Leaders in Dallas-Fort Worth, D CEO (2018)
  • Top 5% - The American Lawyer and Corporate Counsel, “Legal Leaders: Administrative Law” (2017)
  • Nation's Top One Percent, National Association of Distinguished Counsel (2016)
  • National Diversity Council
    • Top Latino Leader Award (2016)
    • Champion of Diversity Award (2012)
  • Hispanic Business Magazine
    • 25 Most Influential Hispanics in the United States (2016)
    • 100 Most Influential Hispanics in the United States (2011)
  • La Luz Award, Dallas Hispanic Bar Association (2016)
  • Maestro Award for Leadership, Latino Leaders Magazine (2011)
  • Multicultural Leadership Award, Texas Diversity and Leadership (2010)
  • Defender of the Year, Dallas Business Journal (2008)
  • Chairman's Leadership Award, Greater Dallas Hispanic Chamber of Commerce (2006)
  • Spirit of Excellence, American Bar Association, National Commission on Minority Lawyers (2000)
  • President's Special Citation Award, State Bar of Texas, Outstanding Lawyer (1988)

Professional Memberships & Community Involvement

  • Dallas Bar Association
  • Dallas Hispanic Bar Association, Former President
  • Litigation Counsel of America, Advisory Board
  • Smithsonian Latino Center
  • University of North Texas at Dallas Foundation Board, Founding Director
  • JPMorgan Chase, Dallas Region, Advisory Board
  • JPMorgan Chase, Metroplex Region Community, Advisory Council
  • JPMorgan Chase, National Community, Advisory Board
  • Children’s Medical Center Dallas, Former Board of Directors
  • Dallas Museum of Art, Former Board of Directors
  • Dallas Area Rapid Transit Authority, Former Board of Directors
  • The Catholic Foundation, Advisory CouncilMember
  • Julian Samora Legacy Project Board, Former President
  • Texas Minority Counsel Program, State Bar of Texas, Founding Member
  • Congresswoman Eddie Bernice Johnson, 30th District of Texas, Hispanic Advisory Board
  • Parkland Foundation, Former Board of Directors
  • North Texas Public Broadcasting (KERA), Former Board of Directors
  • Southern Methodist University, Willis M. Tate Distinguished Lecture Series, Former Board of Directors
  • Dallas Independent School District, Law Magnet, Center for Public Service, Former Advisory Board Member
  • George Washington University Law School, Board of Advisors
  • U.S./Mexico Binational Chamber of Commerce, Board Member
  • Dallas Mexican Bar Association, Former President
  • Dallas Hispanic Chamber of Commerce, Former President
  • University of Notre Dame, Former National Chairman
  • Hispanic Alumni Association Chaired AIDS Task Force, Former Chairman
  • Education Subcommittee of Dallas Together, Former Chairman
  • University of North Texas, College of Law, Board Member and Co-Chair Founder
  • State Bar of Texas, Committee on Immigration and Nationality Law, Former Chairman
  • Greater Dallas Chamber of Commerce, Former Board of Directors
  • Methodist Medical Center, Former Board of Trustees
  • Mexican American Legal Defense and Education Fund, Former Board of Directors
  • Mexican American Legal Defense and Education Fund
  • North Texas Super Bowl XLV Host Committee, Past Member
  • The Willis M. Tate - SMU Distinguished Lecture Series, Former Board of Directors, 2011-2013

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