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Jon is originally from the Fort Worth area. He graduated from Texas Tech University’s Rawls College of Business and then attended the Texas Tech School of Law. In law school Jon participated in several practice court activities, reaching the final rounds and winning awards in several. He also served as an editor on two journals, the Texas Tech Law Review and the Estate Planning & Community Property Journal. In his third year of law school, Jon had the opportunity to argue a real case before one of the United States Circuit Courts, the level of court just before the U.S. Supreme Court.
Initially, Jon worked as a law clerk with the firm and then went on to work as an attorney in the firm’s litigation department for three years. After a two and half year absence in which he had his own law firm and relocated to Austin, he rejoined the firm to work with Kevin Glasheen in our Austin office. In September 2018, Jon attended the Gerry Spence Trial Lawyer's College in Dubois, Wyoming.
Jon has focused his entire career on representing people, and their families, who have suffered catastrophic injuries or death. He prides himself on his ability to understand and explain to juries the true harms caused by injuries and the ways in which an injury can drastically alter someone’s life.
Over the years, Jon has represented people in serious workplace injuries, commercial trucking cases, significant motor vehicle and motorcycle crashes, pipeline explosions, premises liability claims, pedestrian accidents, and various other situations. His aggressive style has led to successful outcomes through settlement and trial for hundreds of clients.
Super Lawyers selected Jon as a Texas Rising Star since 2016, a Top 100 Rising Star in 2021, and the National Trial Lawyers has chosen him as a Top 40 Under 40 since 2016 as well. In 2016 he was named to the Nation’s Top One Percent by the National Association of Distinguished Counsel, which includes less than 1% of practicing attorneys in the United States. In 2022, Jon was selected for Texas Super Lawyers in his first year of eligibility and he has been selected every year since. In 2023, he was also selected to the Top 100 Personal Injury attorneys by the National Trial Lawyers. In addition to his legal practice, Jon is active with the Texas Trial Lawyers Association (TTLA), an organization dedicated to protecting the rights of the people to seek justice in the Texas court system. He serves on the Board of Directors for TTLA and was the 2018-2019 Chair for TTLA's Advocates Committee, during which he founded the TTLA LEAD Academy.
In April of 2023, Jon and his co-counsels obtained an $860 million dollar verdict in the case Williams et al. v. Greystar Development & Construction, LP, et al. in Dallas County.
Jon is licensed to practice in all state courts in Texas, New Mexico, Arizona, and Colorado. He is also admitted to practice in the United States District Courts for the Northern District and Western District of Texas and the United States District Courts for the District of New Mexico.
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Chat withState: Arizona
Acquired: 2016
No misconduct found
State: Colorado
Acquired: 2016
No misconduct found
State: New Mexico
Acquired: 2010
No misconduct found
State: Texas
Acquired: 2009
No misconduct found
1703 West Ave., Austin, TX, 78701
1101 Montana Ave, El Paso, TX, 79902
422 N Grant Ave, Odessa, TX, 79761
1302 Texas Ave, Lubbock, TX, 79401
4300 San Mateo Blvd NE, STE B150, Albuquerque, NM, 87110
Showing 1 - 5 of 26 client reviews from Avvo
Posted by Charles | December 1, 2025 | Hired Attorney
I want to offer my highest praise for Jonathan Conrad Clark of GLASHEEN, VALLES & INDERMAN. Jonathan took on a complex and heartbreaking Texas DTPA case for my 82-year-old mother, completely pro bono, and his compassion, professionalism, and commitment were extraordinary. Before finding Jonathan, ...
Posted by anonymous | July 28, 2024 | Hired Attorney
Joh was very attentive, available when called. He stayed on top of our case and are very grateful to him.
Posted by David | May 21, 2024 | Hired Attorney
When I say he's the attorney you have in your mind, I mean he's the picture perfect realization of what you imagine your perfect lawyer to be. Strong, professional and courteous but willing to fight tooth and nail for your sake. When I tell you this man works miracles I mean every syllable and I'm no...
Posted by Clinton | May 22, 2022 | Hired Attorney
Jon Clark handled the case for me and my son, who was severely injured in an automobile accident that completely destroyed my car as well. The results were 5-Star right down the line……most importantly the recovery amount. The defendant fought like Hell to avoid responsibility, but Jon made them pa...
Posted by Joey | May 20, 2022 | Hired Attorney
I come from a family of attorneys that sent me Jon's way. The things he did to strengthen our position by the time mediation and our trial date came around were incredible even by TV drama standards. I couldn't be more pleased with his professionalism, expertise and courtesy. I always felt like he ha...
"If you have a personal injury issue, the first thing you should be concerned about is whether your lawyer truly empathizes with your situation. The second thing you should be concerned about is whether your lawyer knows the law so that he/she can best advocate on your behalf. The third thing you should be concerned about is whether your lawyer will be likable to a jury (because if your case is tried before a jury, whether or not the jury likes your lawyer can be devastating). Being a former Judge, I am a firm believer in Jon Clark and what he brings to the practice of law. He is a compassionate and zealous advocate for his clients; he knows the law inside and out; and he is one likable gentleman. Anyone needing Mr. Clark's services should know he/she is in good hands."
"I endorse this lawyer. Jon is one of the best young PI lawyers around. Jon is a true advocate for his clients."
"Jon's an excellent attorney. He understands what's required to get his clients maximum compensation for their injuries."
"Jon is a great person and a fantastic lawyer. He is hard-working, caring, and enthusiastic about what he does."
"John sets the bar for consistency and diligence in his practice. He has a stalwart work ethic and will be the most dependable factor in your lawsuit. He makes sure that his clients experience the highest degree of success available to them. Your search for an excellent attorney ends here with John Clark - he will be the calm in your storm!"
"I endorse Jonathon. He is a highly skilled attorney that is well respected in the legal community."
"I endorse Jon. Jon is skillful advocate and is tireless in his pursuit of justice for his clients."
"Mr. Clark is a hardworking, trustworthy attorney. He understands the hard work necessary to effectively pursue his clients' claims, and he routinely puts in the effort and hours to do so."
"Jon is a passionate attorney who cares very deeply about each and every case. I endorse this lawyer."
"I endorse this lawyer. Mr. Clark is an experienced advocate who commands respect from insurance companies and opposing attorneys. He has a great deal of experience and enjoys helping people through the legal practice."
"Jon has years of experience handling highly complex personal injury cases. I know first-hand what a great lawyer he is."
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2022
Top 40 Under 40, National Trial Lawyers
2022
Super Lawyer, Texas Super Lawyers
2022
Top 100 Rising Star, Texas Super Lawyers
2022
Rising Star, Texas Super Lawyers
2021
Top 40 Under 40, National Trial Lawyers
2021
Rising Star, Texas Super Lawyers
2020
Top 40 Under 40, National Trial Lawyers
2020
Rising Star, Texas Super Lawyers
2019
Top 40 Under 40, National Trial Lawyers
2019
Rising Star, Texas Super Lawyers
2018
Rising Star, Texas Super Lawyers
2018
Top 40 Under 40 - Civil Plaintiff, National Trial Lawyers
2017
Top 40 Under 40 - Civil Plaintiff, National Trial Lawyers
2017
Rising Star, Texas Super Lawyers
2016
Rising Star, Texas Super Lawyers
2016
Top 40 Under 40 - Civil Plaintiff, National Trial Lawyers Association
2015
Top Attorneys of North America, Heritage Who's Who Directories
2015
Nation's Top One Percent, National Association of Distinguished Counsel
2009
Distinguished Service, Estate Planning Journal
2009
Distinguished Service, Texas Tech Law Review
2008
Distinguished Service, Texas Tech Law Review
2007
Top Advocate, Mack Kidd Administrative Moot Court
2007
Best Brief, Mack Kidd Administrative Moot Court
2015 - Present
Attorney, Glasheen, Valles & Inderman, LLP
2013 - 2015
Attorney, Zinda & Davis, PLLC
2012 - 2013
Partner, Guardiola & Clark, P.C.
2009 - 2012
Attorney, Glasheen, Valles, Inderman & De Hoyos, LLP
2008 - 2009
Law Clerk, Honorable Sam Medina - 237th District Court
2007 - 2007
Law Clerk, Law Office of Wes Dauphinot, PC
2018 - Present
Gerry Spence Trial Lawyers CollegeF Warrior
2017 - Present
College of the State Bar of TexasMember
2016 - Present
Texas Trial Lawyers AssociationBoard of Directors
2016 - Present
State Bar of ArizonaMember
2016 - Present
Colorado Bar AssociationMember
2015 - Present
Texas Trial Lawyers Association AdvocatesBoard of Directors
2014 - Present
Capital Area Trial Lawyers AssociationMember
2014 - Present
American Association for JusticeMember
2014 - Present
National Association of Distinguished CounselNation's Top One Percent
2010 - Present
State Bar of New MexicoMember
2009 - Present
State Bar of TexasMember
2008 - Present
Texas Trial Lawyers AssociationMember
2018 - 2019
Texas Trial Lawyers Association AdvocatesChairperson
2012 - 2013
West Texas Epilepsy FoundationBoard of Directors
2009 - 2014
South Plains Trial LawyersMember
2008 - 2009
Texas Trial Lawyers AssociationPublicity Officer
2007 - 2009
ABA = Appellate Advocacy CommiteeVice Chair
Total verdict of $860M+
Settled for policy limits
Settled for policy limits
Recovered a large confidential settlement for policy limits for our client within 6 months
Collected a large confidential settlement on behalf of our client.
2018
2009
Doctor of Jurisprudence
2009
Certified Mediator
2006
BBA - Bachelor of Business Administration
2018
The Use and Misuse of Protective Orders
2018
The Use and Misuse of Protective Orders
2015
Protective Orders
2009
English
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