Full-Service Law Firm in North Texas
Leaders in the Courtroom. Leaders in the Community.
- AV Preeminent® Rated Firm With Board-Certified Attorneys
- Trusted in Business, Personal Injury, Real Estate, Probate, Family Law, & More
- Decades of Proven Results
- Serving Arlington, Mansfield & Communities Across North Texas
Decades of Proven Results!

Why North Texas Trusts Us








Leading Attorneys
Our team includes board-certified specialists and an AV Preeminent® rating, the highest honor from Martindale-Hubbell. These credentials reflect exceptional skill, integrity, and the confidence of peers and clients.
Comprehensive Services
From family law and business litigation to real estate, probate, and personal injury, Harris Cook offers full-service representation. Clients trust us for both urgent courtroom advocacy and long-term planning.
Proven Litigators
With more than 50 years of combined trial and appellate practice, our attorneys are accomplished litigators who have argued at every level. We know how to strategize, prepare, and deliver results when it matters most.
Deep North Texas Roots
Our attorneys are not only legal leaders but also civic leaders. They are trusted voices in local government, business, and community organizations. We proudly serve Arlington, Mansfield, and the greater North Texas region.
Where Legal Leadership Meets Community Trust
Founded by the late Senator Chris Harris, Harris Cook, LLP carries forward a legacy of leadership in the courtroom and the community. Today, Managing Partner David L. Cook, a board-certified family law attorney, former Mayor of Mansfield, and current Texas State Representative, leads a team of accomplished lawyers serving North Texas.
From family law and estate planning to business disputes, construction, real estate, and personal injury, we provide full-service representation. Our attorneys include board-certified specialists, former judges, and respected community leaders committed to skilled, compassionate counsel.
At Harris Cook, we know legal matters affect families, businesses, and futures. If you need trusted advocacy in Arlington, Mansfield, or other areas of North Texas, we are ready to stand with you.
“We were in great hands.”
"We contacted Harris Cook requesting counseling in regards to a child custody case. David was very compassionate with our current situation but was also very proactive in looking ahead and advising us in a direction that would be best for our family. David was so confident and professional through all of the ups & downs. We knew we were in great hands and we feel so blessed to have achieved the outcome that David and his staff worked so hard for."
— Michelle, 5-Star Review

Family Law at Harris Cook
At Harris Cook, LLP, we provide strategic family law representation for clients across North Texas. Our attorneys handle divorce, custody, child support, adoption, and high-asset property division with precision and care.
Managing Partner David L. Cook and Of Counsel Donna J. Smiedt are both board-certified in family law by the Texas Board of Legal Specialization, a rare credential earned by fewer than 1% of Texas attorneys. Clients trust us to protect their families, their assets, and their futures during life’s most difficult transitions. We're ready to help you take the right steps forward.
All Services
- Business Litigation
- Small Business
- Civil Litigation Attorney
- Breach of Contract Lawyer
- Consumer Fraud Lawyer
- Personal Injury
- Car Accidents
- Wrongful Death
- Motorcycle Accidents
- Pedestrian Accident Lawyer
- Dog Bite
- Slip and Fall
- Bicycle Accident Lawyer
- Family Law
- Divorce
- Real Estate Attorney
- Title Review Lawyer
- Guardianship
- Business Law
- Business Formation Attorney
- Business Transaction Lawyer
- Employment Law
- Business Attorney for Mergers and Acquisitions
- Business Succession Lawyer
- Construction Law
- Estate Planning Wills vs Trusts
- Probate
- Regulatory Affairs Attorney