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Mark Douglas Thompson

DUI and DWI Attorney at Iowa City, IA

5.0   8 reviews
Free consultation Virtual consultation available
Free consultation Virtual consultation available
  • Licensed for 19 years
    State IA
    Acquired 2004
    Active No misconduct found

We have not found any instances of professional misconduct for this lawyer.

About Mark

Learn Mark’s areas of practice.


Criminal defense attorney Mark Thompson has been practicing criminal law in Iowa City since 2004. He has personally handled over two thousand local criminal cases with the Johnson County Attorney’s Office and surrounding jurisdictions. He previously served as a judicial magistrate for a period of over 7 years, which gave him exceptional insight and experience in Iowa criminal law procedure.

Our specialized, boutique practice is focused only on criminal defense, with an emphasis on OWI / DUI / Operating While Intoxicated cases. We do not practice any other areas of law, which allows us to be as focused as possible on your case.

Our firm has successfully suppressed state’s evidence, won jury trials, and negotiated aggressive plea bargains for our clients. Mark is highly experienced, has excellent communication with his clients, and gets results. We publish real reviews from real former clients.

We have worked with hundreds of students at the University of Iowa to minimize the impact of criminal charges on their futures. With our specialized case load and highly focused practice you will get the expert attention you need.

If you have a new criminal charge in or around the Iowa City area, please call for a free consultation today.


Mark attended the University of Iowa as an undergraduate before enrolling in Luther College, in Decorah, Iowa.  He graduated with a B.A. in computer science.

He was accepted at the University of Iowa College of Law in 2000, then ranked among the nation’s top 10% of all law schools. He deferred enrollment for one year, and began studying law in 2001. He also studied law at Oxford University in England. He graduated from the University of Iowa College of Law in May of 2004.

After working for a law firm for one year, he decided to start his own practice. In addition to his private practice, Mark has handled hundreds of criminal and juvenile cases on a contract basis through the Iowa State Public Defender's Office.  Mark served as defense counsel with the Johnson County Drug Treatment Court for roughly 8 years, and subsequently served as a Judicial Magistrate for the Sixth Judicial District for over 7 years.

Now he focuses solely on his private criminal law practice. 


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Thompson Law Office
308 E Burlington St #147
Iowa City, IA, 52240


5.0 / 5.0
  8 customer reviews
5 Star
4 Star
3 Star
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1 Star
Posted by Joe | November 30, 2015
This review is from a person who hired this attorney.
| Hired Attorney
Aided our family in time of need.
I needed to retain Mark for an unfortunate circumstance regarding a family member. Mark went above and beyond in helping us with all our legal matters. From a legal standpoint everything was explained clearly to us, and everything turned out as Mr.. Thompson said it would. Actually BETTER than what was expected. Mark clearly told us some of what he would shoot for was a longshot - but he came through for the family. Mark's legal skills are impeccable, but the thing that impressed me most was his genuine caring for the young individual involved. Mr. Thompson is a credit to his profession, and I would recommend him to anyone in need of legal assistance.
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Posted by Lisa | February 4, 2015
Helped Scared Parents
Mr. Thompson, was honest and knew what he was talking about. Explained exactly what is going to happen from beginning to end dealing with all court procedures. He fought hard and understood what was at stake. He made us feel very comfortable speaking with him, he also returned emails promptly. I would highly recommend him dealing with your case.
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Response from Mark Thompson August 31, 2015
Posted by Cory | October 10, 2014
Mark Thompson--Great Lawyer, Great Guy
I can't recommend Mark Thompson highly enough. I was charged with OWI 2nd Offense, and Mark was able to get it reduced to a first offense with the minimum fine and a weekend diversion program in lieu of jail. He always kept me updated on the status of my case, and he clearly explained all of the possible scenarios and outcomes involving my charges. He always returned my phone calls and emails promptly and made me feel like I was the only person on his caseload. He is VERY reasonably priced too! I hope I never need a lawyer again, but if I do, I'm calling Mark Thompson.
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Response from Mark Thompson August 31, 2015
Glad I could be of help.
Posted by anonymous | August 21, 2014
Great Communication.
Mark was very personable, and always kept us up-to-date regarding our son's case. He was quick to respond to email, and always called back within 24 hours if he was in court when I called. He gave us the result in court that he anticipated so there were no surprises. He is great to work with for any worried parents that have a child get in trouble while away at college.
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Posted by anonymous | August 21, 2014
Friendly guy and easy to deal with
Though my legal problem was rather minor, Mark treated it as if it were a much more important thing. He kept me updated when anything happened with the case and assured me over and over that he is doing everything in his power to speed up the process and help me get what I needed. He was also much friendlier than I was expecting. I would highly recommend him to anyone.
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Posted by anonymous | February 26, 2014
Truly A Great Lawyer
Mark is a great lawyer. He was very professional and passionate throughout my legal proceedings. I would highly recommend him to anyone, for any type of legal service. He went above and beyond on my case, even without being asked. Mark did a great job of communicating with me about all of the aspects of my case. I knew nothing about the legal system, and he did a great job of explaining all the jargon and informing me about what/who/when/how things were going to take place. Going through any legal situation is never easy, and Mark truly made the whole experience much easier. He responded to all my phone calls and emails in a very quick manner. In the end, my case was dropped which is something I am positive not any lawyer in Iowa City could have done. Mark was truly an intelligent, dedicated, and personable lawyer while handing my case.
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Posted by Jeff | February 19, 2014
Highly Recommend Mark Thompson - Outstanding
After interviewing several possible lawyers in Iowa City, we hired Mark for a criminal defense case because we were very impressed with his proposed approach and energy level. He was outstanding. We could not have made a better choice of an attorney. He quickly grasped the key aspects of the case and showed remarkable tenacity and dedication. Mark procured (subpoena) key video evidence rapidly, which was critical, since it could have been easily erased or taped over at the site of the incident. Mark reviewed all the facts/interviews/video/ police reports very carefully. Mark really believed that our child was innocent and was committed to achieve a just outcome . He made a very clear and concise case for a dismissal. Mark worked effectively with the Iowa City prosecutors office, where he has established solid credibility. The case was dismissed ( no trial ) by the prosecutor: the best possible outcome and truly just outcome. I have worked with many different lawyers in my profession and i sincerely give Mark the highest recommendation. He is intelligent , an excellent communicator , focused on the facts , and very dedicated.
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Posted by anonymous | February 15, 2014
Review of Mark Thompson
Mark was excellent and diligent in getting my daughters charges dismissed. He quickly got all evidence and reviewed it and got my daughter involved for clarification. He approached the prosecutor quickly and asked for a review and remained persistent in asking for a review by the prosecutor several times. The prosecutor did not review until the last few days before a trial would have started. Finally the system worked for my daughter.
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  • Free Consultation 60 minutes
Payment methods
Check, Credit Card


AVVO RATING 9.6 (Superb)

Work Experience

  • Attorney
  • Thompson Law Office
  • 2005 - Present
  • Mental Health Attorney Advocate
  • Sixth Judicial District
  • 2015 - 2016
  • Drug Court Defense Attorney
  • State of Iowa
  • 2011 - 2018
  • Contract Attorney
  • State Public Defender
  • 2005 - 2011
  • Contract Criminal and Juvenile Attorney
  • State Public Defender's Office
  • 2005 - 2011
  • Associate Attorney
  • John Wagner Law Offices
  • 2004 - 2005
  • Law Clerk
  • Foster Law Office
  • 2003 - 2004
View all work experience


  • University of Iowa College of Law
  • JD - Juris Doctor
  • 2004
  • Luther College
  • BA - Bachelor of Arts
  • 2000

Sample of Legal Cases

  • Theft 5th
  • Dismissal
  • September 2013, Johnson County District Associate Court
  • Dismissal
  • FECR095111
  • Deferred Judgment
View all legal cases


  • National Association of Drug Court Professionals
  • Member
  • 2012 - Present
  • Dean Mason Ladd American Inn of Court
  • Master
  • 2005 - Present
  • Iowa State Bar Association
  • Member - Criminal Law
  • 2004 - Present
  • Dean Mason Ladd American Inn of Court
  • Secretary/Treasurer
  • 2012 - 2014
View all associations

Languages Spoken

  • English

Honors and Awards

  • Client Distinction Award
  • Martindale-Hubbell
  • 2022
  • Client Champion Award
  • Martindale-Hubbell
  • 2022
  • Client Distinction Award
  • Martindale-Hubbell
  • 2022
  • Clients' Choice 2014
  • Avvo
  • 2014
  • Top 50 OWI Attorneys - Iowa
  • National Advocacy for DUI Defense
  • 2014
  • Top 10 Under 40
  • National Academy of Criminal Defense Attorneys
  • 2014
  • Criminal Defense Law - Law Firm of the Year, Iowa
  • Global Law Experts
  • 2013
  • Client Distinction Award
  • Martindale-Hubbell
  • 2013
  • Client Distinction Award
  • Martindale-Hubbell
  • 2012
View all awards


  • Published Legal Answers
  • 2012

Speaking Engagements

  • Private Practice Forum
  • Private Practice
  • 2014
  • Client Counseling Class
  • How to Start a Law Firm
  • 2013
  • Seminar
  • Legal Ethics in Iowa, as Applied to Real World Practice
  • 2012
  • Criminal Law Seminar
  • Drug Courts: A Comparison of Approaches
  • 2012
  • What Lawyers Need to Know, Outside of their Specialty
  • Dealing with an OWI Charge in Iowa
  • 2011
View all speaking engagements

Attorney endorsements

Received (9)
Given (8)
Endorse Mark
Criminal defense Attorney | Jun 02
Relationship: Fellow lawyer in community
"Mark has established himself as a strong advocate for his clients in the area of criminal defense. His priority is his clients - and the results show."
Criminal defense Attorney | Sep 09
Relationship: Fellow lawyer in community
"I endorse this lawyer. Mark Thompson has an excellent reputation with criminal defense attorneys and prosecutors alike and it is well deserved. He is knowledgeable and able to get great results for his clients quickly and efficiently. I have referred clients to him and on every occasion they have reported great satisfaction with his representation."
Criminal defense Attorney | Aug 31
Relationship: Fellow lawyer in community
"Mark is a fantastic Criminal Defense attorney."
Criminal defense Attorney | Aug 31
Relationship: Fellow lawyer in community
"Mark is extremely focused, disciplined, and thoroughly competent. I would refer clients to him without question."
Criminal defense Attorney | Apr 02
Relationship: Fellow lawyer in community
"Mark is an intelligent and conscientious person."
Criminal defense Attorney | Aug 20
Relationship: Fellow lawyer in community
"I went to law school with Mark, and I've known him to be a very diligent, hard-worker. I highly recommend Mark for criminal defense in Iowa City!"
Criminal defense Attorney | Aug 20
Relationship: Fellow lawyer in community
"I endorse this lawyer. Mark Thompson is honest, hardworking and highly experienced in the nuances of practicing criminal law in Johnson County, Iowa."
Criminal defense Attorney | Feb 15
Relationship: Worked together on matter
"Mark is an extremely talented and dedicated attorney. He cares greatly about servicing his clients and ensuring that they receive the defense that they deserve."
Criminal defense Attorney | Jul 01
Relationship: Family member
"Mark Thompson is an excellent choice if you are looking for a professional, experienced and pragmatic criminal defense attorney that knows the ins-and-out of the courtrooms of Iowa City and Eastern Iowa. Upfront, Mark provides his clients with realistic case assessments and then he moves his cases forward to secure the best possible deal for his clients."
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