Attorney Mark A. Nacol

Texas native Mark A. Nacol has practiced law for over 40 years. He focuses his work in the Areas of Civil & Commercial Litigation, Business Transactions, Contract Drafting, Review and Disputes, Divorce & Family Law, Real Estate Litigation, Corporate Litigation, Will and Probate Litigation.

Mark Adam Nacol was born in Wichita Falls, Texas and graduated from Wichita Falls High School. Mark attended the University of Texas at Austin where he was a member of Sigma Nu Fraternity. He graduated with a Bachelor of Arts degree in Psychology with concentrations in English and Philosophy.

Upon graduation, he immediately entered law school at South Texas College of Law and graduated with a Doctor of Jurisprudence. While at South Texas College of Law, Mr. Nacol was affiliated with Delta Theta Phi Law Fraternity.

Following graduation from South Texas College of Law, Mr. Nacol was admitted to the practice of law in 1974. He practiced law in Mesquite, Texas from 1974 until 1979, in North Dallas from 1979 to 1999 and in Richardson from 1999 until 2017 (now with an office in Dallas), initially as Mark A. Nacol and Associates, P.C., then Nacol, Wortham and Associates, P.C., and since 2009, The Nacol Law Firm PC.  Mr. Nacol is board certified in civil trial law by the Texas Board of Legal Specialization.

The Nacol Law Firm PC, carries on a practice in legal areas that concentrate in Federal and State Courts on Business-Related Activities, such as Civil, Corporate, and Commercial Litigation, Business Contracts and Transactions, New Business Formation, Real Estate Litigation, Breach of Fiduciary Duty and Professional Negligence. In addition, Mr. Nacol provides Families with Legal Services that address their needs in Divorce, Family Law, Real Estate, Probate Law and Will Contests.

Attorney Mark A. Nacol has been awarded the AV Preeminent 5.0 out of 5 rating from Martindale-Hubbell. This prestigious award, the highest rating for lawyers, represents a measure of esteem for which attorneys strive. It recognizes Mr. Nacol for his outstanding legal abilities, acknowledged by his peers, and signifies that his professional ethics and conduct are of the highest peer review rating.

Bar & Court Admissions

  • Texas, 1974
  • U.S. Tax Court, 1980
  • U.S. Supreme Court, 1982
  • 5th U.S. Circuit Court of Appeals, 1984
  • U.S. Tax Court, 1980
  • U.S. District Court Northern District of Texas, 1974
  • U.S. District Court Eastern District of Texas
  • U.S. District Court Western District of Texas
  • U.S. District Court Southern District of Texas


  • J.D., 1974, South Texas College of Law, Houston, Texas Honors: Delta Theta Phi law fraternity
  • B.A. in Psychology, 1971, University of Texas at Austin Honors: Sigma Nu fraternity; vice president, UT Debate Team

Professional Associations & Memberships

  • State Bar Of Texas
  • Board Certified in Civil Trial Law by Texas Board of Legal Specialization
  • American Board of Trial Advocates
  • A Fellow of the College of the State Bar of Texas
  • Dallas Bar Association
  • Mesquite Bar Association, President, 1978–79


  • Guest lecturer on psychology of the family, Southern Methodist University Psychology Department

Mark Nacol’s law practice concentrates on the following areas:

Texas Board Certified Civil Trial Attorney.
Civil & Commercial Litigation, Business Transactions, Family Law & Divorce, Probate Law & Will Contests, Real Estate

Civil Law:
Transactional Law | Contract Disputes | Tort liability | Negligent security | Construction defects | Construction Law | Contractor Issues | Subcontractor Issues | Lien Disputes | Fraud | Breach of contract | Breach of non-disclosure agreements | Deceptive Trade Practices Act Cases| Breach of fiduciary duty | Wrongful Termination | Employment contracts | Insurance-coverage disputes | Home-builder and seller warranty disputes | Investment Fraud | Consumer Fraud | Government Fraud Litigation

Business | Commercial | Corporate Law:
Lender Liability | Shareholder Disputes | Partnership Issues | Torts | Fraud | Construction Claims | Breach of Fiduciary Duty | Officer and Director Liability | Formation of Corporate Entities and Partnerships | Business Litigation | Corporate Law | Joint Ventures Law| Partnership Law | Small Business Law | Limited Liability Company Law | Buying and Selling of Businesses | Drafting Contracts | Anti-Trust and Competition Law | Mergers and Acquisitions | Business Planning | Contract Negotiations

Divorce and Family Law:
Divorce | Fathers Rights | Child Custody | Interstate Jurisdictions | Parental Rights & Support| Modifications & Visitation | High Asset Divorces | Paternity | Division of Property | Protective Orders | Prenuptial & Post Marital Agreements | Same-Sex Marital Conflicts & Domestic Relationship Contracts | Grandparent’s Rights | Enforcements |  Post Maintenance Spousal Support | Divorcing with a Business

Real Estate Law:
Commercial Real Estate |Homeowners Association Law – HOA Law | Residential Construction Liability Act cases | Residential Real Estate | Contractor Issues | Subcontractor Issues | Construction Contracts | Lien Disputes

Probate and Will Contests:
Wills | Determination of Valid Wills | Living Wills| Living Trust | Power of Attorney | Guardianship | Will Contests | Special Needs Trusts | Probate Administration | Probate Litigation | Suits against Executors for Breach of Fiduciary Duty, Fraud, Negligence, or misapplication of funds.

Mark Nacol
Mark Nacol has settled extremely large and complex civil litigation disputes and business torts. If you think you may have a case,  please call, or use our website form to contact us about your situation.