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Philip Marshall Clark

DUI and DWI Attorney at Boulder, CO

4.3   6 reviews
  • Licensed for 33 years
    State CO
    Acquired 1990
    Active No misconduct found

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

About Philip

Learn Philip’s areas of practice.


Hi, I'm Phil Clark, Boulder DUI attorney for criminal defense and family law. As a descendant of William Clark of Lewis & Clark, trial attorneys are a tradition in my family starting with Jonas J. Clark, appointed by Abraham Lincoln in 1861.

I am a criminal defense attorney in Colorado and have experience on the other side of the law as a senior prosecutor for the Denver metro area. I was appointed second-in-command of Weld County District Attorney's Office and a member of Colorado District Attorney's Council State Governing Board.


Contact me today for a FREE initial consultation.

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Philip Marshall Clark
3223 Arapahoe Ave.
# 300
Boulder, CO, 80303

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4.3 / 5.0
  6 customer reviews
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Posted by Elizabeth | November 15, 2017
This review is from a person who hired this attorney.
| Hired Attorney
Worth his weight in gold!!!
At 52 years old, I found myself with a temporary restraining order issued against me by a very unfriendly neighbor who exaggerated and was dishonest with the court. Phil's defense strategy was brilliant and 100% spot on. He won my case and the petitioner's request for a permanent protection order was denied. Hire him if you find yourself in ANY legal criminal trouble. TRUST his advice. Follow his lead. This man is a consummate professional and I wouldn't hesitate to hire him again or recommend him to anyone. Yes, he's that good! He's a man of integrity as well. So glad someone in Denver recommended him to me.
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Posted by anonymous | November 18, 2015
This review is from a person who hired this attorney.
| Hired Attorney
A Real Cluster - We needed the Best Representation!
When Results Matter!! Preparation, Persistence and Performance are KEY. Phil Clark was an expert every step of the way when dealing with a possible Felony for our 20year old son involved in a Brawl incident while in Boulder. We interviewed over 4 lawyers seeking the "best fit" for our son's representation. We picked him and thank God today that we made that choice. His objectives were Clear and they were solid. I advise anyone needing any help with legal matters to hire Phil Clark. I am daughter of a father who practiced law in Chicago for over 48 years!! I wanted the Best for our son and that is exactly what we got. Do your homework before you hire someone! Phil's care, expertise, delivery and results for our son were outstanding.- Excellent Results!!!
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Posted by Shari Lynn | November 10, 2014
Experience on both sides of the law was key
Phil helped me in a very difficult situation of a hit and run, which involved some corruption by the police. Although I highly respect law enforcement my case was clearly fraudulent. With Phil's DA experience and is ability to be an excellent voice for me. He was able to work with law enforcement. Not only did my case go smoothly, it saved me the devastating charges that would have caused the loss of my drivers license. I couldn't have done it with out his help and expertise. He is ethical, professional and easy to work with . Thank You Philip Clark.
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Posted by ben | November 6, 2014
A great lawyer who you can trust.
Phil Clark took my 3rd DUI to trial and we won. I was always informed of what was happening with my case and I always felt secure with his decisions on how to proceed. Phil fought for me and I will be forever grateful. I felt and still do, that he honestly cared about the outcome of my case and completely committed himself to winning. Phil treated me with respect and never seemed judgmental or pushy. Some lawyers are so set on doing things their way that you get the feeling that you are just a payday, not with Phil. I would recommend his services to anyone 100 percent.
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Posted by Scott | July 19, 2012
I had a great experience with Phil Clark. I would recommend him to anyone.
Posted by anonymous | October 14, 2017
This review is from a person who hired this attorney.
| Hired Attorney
Phil Clark was not helpful in my case.
I had Phil for a case in Boulder County. My family knew more about the case by making calls than he ever told me. He rarely returned calls. When he did, it was about next payment. Many times I called from other phones so he would answer. He said there was a new DA on my case and that was the hold up, but we found out by asking that it wasn’t. He wasn't clear with who he talked to or the information about my case. He seems to be a one person show in a suite with an assistant that works for several people. Not responsive at all. We ended up talking to the DA ourselves and worked out the deal in my benefit.
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  • Free Consultation 30 minutes
Payment methods
Cash, Check, Credit Card


AVVO RATING 8.9 (Excellent)

Work Experience

  • President and Founder
  • The Clark Law Firm
  • 2008 - Present
  • Assistant District Attorney
  • 19th Judicial District Attorney's Office
  • 2005 - 2008
  • Deputy District Attorney
  • 18th Judicial District Attorney's Office
  • 1987 - 2005


  • University of Denver Sturm College of Law
  • JD - Juris Doctor
  • 1990
  • Colorado State University
  • BS - Bachelor of Science
  • 1985

Sample of Legal Cases

  • People v. B.W.
  • Not Guilty on all charges at trial.
  • People v. B.W.
  • Not Guilty on all charges at trial.


  • Colorado Bar Association
  • 1990 - Present
  • Boulder County Bar Association
  • N/A
  • Colorado Criminal Defense Bar Association
  • N/A

Languages Spoken

  • English

Honors and Awards

  • Dedicated Service Award
  • Chronic Offender Program
  • 2005

Speaking Engagements

  • Colorado Annual District Attorney Convention
  • Post Conviction Review
  • 2002
  • Colorado Annual District Attorney's Convention
  • Driving Under the Influence Cases
  • 2001
  • Colorado Annual District Attorney's Convention
  • Interacting with Judges and Attorneys
  • 2000
  • Colorado Trial Techniques School
  • Examination of Witnesses
  • 1997
View all speaking engagements

Attorney endorsements

Received (12)
Given (14)
Endorse Philip
Criminal defense Attorney | Sep 22
Relationship: Fellow lawyer in community
"Phil is a dedicated and highly experienced lawyer who diligently and effectively fights for his clients to obtain a just result. I highly recommend Phil."
Criminal defense Attorney | Sep 22
Relationship: Fellow lawyer in community
"I have known Phil Clark for many years and know him to be a highly competent and professional attorney. I have referred several cases to Mr. Clark and would not hesitate to do so again in the future should need be."
Criminal defense Attorney | Sep 17
Relationship: Worked together on matter
"I first met Phil Clark when I left the bench as a judge in the 22nd Judicial District. I thought that I had seen excellent attorneys while dealing with attorneys with 40 years of experience while I served as a judge for 7 years. However, the attorneys that I had encountered previously paled in comparison to the skill that I saw in Mr. Clark. Mr. Clark is simply a very charismatic and incredible trial attorney before juries and judges. He is held in high esteem by all of his fellow colleagues and prosecutors in all of the Front Range judicial Districts. As such, he is quite compelling at getting great plea agreements for his clients who do not want to go to trial."
DUI and DWI Attorney | Sep 17
Relationship: Fellow lawyer in community
"I highly recommend Phil. His hard work, knowledge of the law and experience insures that clients will get the absolute best possible resolution of their cases."
Criminal defense Attorney | Sep 17
Relationship: Co-worker
"Phil is an experienced professional who works hard for each and every client he represents. He knows the courts, the prosecutors and the law...just the kind of guy I'd want in my corner!"
Criminal defense Attorney | Sep 16
Relationship: Fellow lawyer in community
"I have known Phil since I first began practicing law. He is extremely experienced and hard working. He has always been helpful to other attorneys and is always willing to go the extra mile for his clients. He is a masterful trial attorney an well respected throughout Colorado. I highly recommend him."
Criminal defense Attorney | Sep 16
Relationship: Fellow lawyer in community
"I endorse Phil Clark. He is a straight shooter, very responsive and I refer my clients with criminal issues to him."
Criminal defense Attorney | Sep 16
Relationship: Fellow lawyer in community
"Phil has the knowledge, experience and personality that allows him to provide top notch representation of his clients."
Criminal defense Attorney | Sep 16
Relationship: Worked for lawyer
"Phil is an amazing lawyer. His knowledge and experience in criminal law is among the best in the state."
Criminal defense Attorney | Sep 16
Relationship: Fellow lawyer in community
"I have known Phil for a number of years. His background as a former prosecutor gives him a unique perspective on the criminal justice system. He is the first person I recommend to anyone who is facing serious legal trouble."
Criminal defense Attorney | Sep 15
Relationship: Fellow lawyer in community
"Phil has the excellent combination of prosecution AND defense experience. That means that he knows what the DA is looking for and how to best position your case for disposition or trial if necessary. I frequently refer Boulder cases to him and I know my referrals are in great hands!"
Unknown Attorney | Mar 13
Relationship: Worked for lawyer
"I endorse this lawyer."
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Criminal defense
Criminal defense
Criminal defense
Criminal defense
Criminal defense
Criminal defense
Criminal defense
Divorce and separation
Criminal defense
Criminal defense

Avvo Contributions

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Boulder DUI and DWI Lawyer Philip Marshall Clark
Philip Marshall Clark
DUI and DWI Attorney
Boulder, CO
Licensed for 33 years
Free Consultation