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Alexander Fredrick Harper

DUI and DWI Attorney at Frisco, TX

5.0   4 reviews

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About Alexander

Learn Alexander’s areas of practice.

Practice areas
  1. DUI and DWI
    DUI law is different than other criminal defense law. DUI defenses are technical and very specialized. Call me for a free consultation to see what I can do for you.

    18 years, 100 cases

  2. Criminal defense
    I have eight years of criminal law experience, handling many hundreds of cases from simple misdemeanors to attempted murder, major drug cases, arson, firearms, DUI, and everything in between. If you want me to bring my experience to court to defend you, call me. The initial consultation is always free.

    18 years, 2,300 cases

  3. Juvenile law
    I represent juvenile defendants against all forms of criminal charges. My clients include children charged with small misdemeanors through serious felonies.

    16 years, 800 cases


Mr. Harper specializes in criminal law defense. He has conducted over 60 criminal trials and handled over 3,000 criminal law cases. In addition to his defense experience, he has extensive experience as a prosecutor. He has handled all types of criminal law matters from basic misdemeanors to murder at both the juvenile and adult levels. Mr. Harper has tried cases involving drugs, firearms, DUI, murder and everything in between. Mr. Harper has achieved numerous courtroom dismissals and acquittals for DUI, robbery, and even murder.

Mr. Harper is an avid motorcycle rider in his free time. With over 27 years of riding experience. He has great experience in cases involving criminal charges against motorcyclists. This legal background, coupled with Mr. Harper’s 23+ years and 300,000+ riding miles covering 48 states makes him a great choice for matters involving motorcycle, club, and vehiclular charges.

Prior to attending law school at the University of Florida College of Law, Mr. Harper served on active duty in the United States Navy. He served as a Supply Corps Officer on board the USS DWIGHT D. EISENHOWER (CVN-69), a nuclear powered aircraft carrier stationed in Norfolk, Virginia.

In 2008, Mr. Harper was recalled to active duty and deployed to Khost, Afghanistan where is served as an embedded combat advisor to the Afghan National Army and was awarded the Bronze Star Medal for Meritorious Achievement in that combat theater. Mr. Harper currently holds the rank of Lieutenant Commander in the US Navy Reserve.

Mr. Harper is licensed to practice law in Texas and California.


Photos and videos

Licensed for 17 years
State TX
Status Eligible to Practice in Texas
Acquired 2020
Updated 10/23/2022
State CA
Status Active
Acquired 2005
Updated 12/06/2022

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

Contact Alexander

Alexander Harper
5999 Custer Rd. Ste 110-171
Frisco, TX, 75035


5.0 / 5.0
  4 customer reviews
5 Star
4 Star
3 Star
2 Star
1 Star
Posted by Bob | March 31, 2018
This review is from a person who hired this attorney.
| Hired Attorney
Alex Is Awesome
Alex Harper is an excellent attorney and a true professional who cares about his clients! I was wrongly accused of impaired driving, and Alex was able to have my DMV hearing set aside and went the extra mile by advocating on my behalf to have the DA dismiss the case. He's a good man to have on your side, and he most definitely will do his very best on your behalf. I highly recommend him!
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Posted by anonymous | November 22, 2014
Interviewed 5 for an assault matter. He was the best. Made the right decision.
For a matter involving a security guard working for a well-known theater with lots of power, I interviewed 5 attorneys after reading "questions to ask before hiring an attorney" (so I was well prepared). The others were very good, but I thought Mr. Harper would be best. He was knowledgeable, experienced, and well-spoken. He explained procedures, options available to me, and what he would be doing and when. He was very detail-oriented and timely. The outcome of my case was exactly what I had hoped to get. If he handled other fields of law, I would hire him for them too.
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Posted by anonymous | April 30, 2014
I recommend Mr. Harper for Criminal Defense!
I was charged with carjacking in Oakland, CA. Mr. Harper took my case. He worked really hard and was talking to the DA all the time. Mr. Harper convinced the DA that I wasn't there when the carjacking happenned, even though I was in the car when it was stopped by police a few days later. Mr. Harper made the police do a new line-up, and convinced the judge that the video of my police questioning was done wrong. The DA wasn't allowed to use my police interview video. At the last minute, the DA offered me a misdemeanor petty theft charge. I was sent home with credit for time served instead of going to prison. I will be thankful to Mr. Harper for his work for the rest of my life.
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Posted by anonymous | April 1, 2009
Homeowners Association very happy!
I am the president of a homeowners association. I hired Mr. Harper on behalf of the association to help us handle a situation that had become very complicated and difficult. Mr. Harper patiently sorted through the issue and confronted the problem aggressively. We are very happy with his work and would recommend Mr. Harper to anyone.
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Contact for Details


AVVO RATING 10.0 (Superb)

Work Experience

  • Attorney
  • Law Office of Alexander F Harper
  • 2013 - Present
  • Deputy District Attorney
  • Kern County District Attorney
  • 2006 - 2013
  • Attorney
  • The Thompson Law Office
  • 2005 - 2006
  • Law Clerk
  • Price, Postel and Parma
  • 2004 - 2005
  • Legal Intern
  • University of Florida Family Law Clinic
  • 2003 - 2003
View all work experience


  • University of Florida, Fredric G. Levin College of Law
  • JD - Juris Doctor
  • 2004
  • University of California - Berkeley
  • Certificate
  • 1996
  • University of California - Berkeley
  • BA - Bachelor of Arts
  • 1996

Legal Cases

  • Juvenile Defense
  • Case transferred back to juvenile.
  • Murder
  • Not Guilty
  • Carjacking
  • Misdemeanor Petty Theft Plea
View all legal cases


  • State Bar of California
  • 2005 - Present
  • Phi Delta Phi legal fraternity
  • 2001 - Present
  • Military Law Students Association
  • President
  • 2001 - 2004

Languages Spoken

  • English


  • Top 100 Criminal Defense
  • The National Trial Lawyers
  • 2018
  • 2018 Elite Lawyer Award
  • Elite Lawyers of America
  • 2018
  • 2018 Law Firm 500 Award
  • Law Firm 500
  • 2018
  • Army Achievement Medal
  • United States Army
  • 2011
  • Bronze Star Medal
  • United States Navy
  • 2008
View all awards


  • Blog
  • A Gator In A Strange Land
  • 2008
  • Santa Barbara County Bar Association
  • Santa Barbara County Inns of Court
  • 2006

Speaking Engagements

  • Navy Operational Support
  • Pre-Deployment Will and Estate Planning
  • 2010
  • Scholar's Presentation
  • Exercise in Futility: Current Trends in the Afghanistan Camaign
  • 2009

Attorney endorsements

Received (15)
Given (26)
Endorse Alexander
DUI and DWI Attorney | Nov 28
Relationship: Fellow lawyer in community
"I endorse this lawyer."
DUI and DWI Attorney | Nov 11
Relationship: Fellow lawyer in community
"I highly endorse this lawyer. I spent 5 days at a conference with Alex - he was my "conference buddy"! I learned how dedicated he is to getting the best results for his clients! He has the knowledge and the compassion to get his clients the best results!"
Criminal defense Attorney | Nov 11
Relationship: Fellow lawyer in community
"Alex is a fantastic criminal defense attorney. He's got tons of experience in a wide array of criminal law issues. If you're facing criminal charges in his area, hire him."
Criminal defense Attorney | Oct 14
Relationship: Fellow lawyer in community
"I endorse this lawyer."
Criminal defense Attorney | May 20
Relationship: Fellow lawyer in community
"I endorse this lawyer. Alex is a smart and aggressive lawyer who fights for his clients."
Criminal defense Attorney | Jan 30
Relationship: Fellow lawyer in community
"I endorse this lawyer. It is very clear from his many years of experience and his contributions that Mr. Harper is extremely knowledgeable and highly competent. I wouldn't hesitate recommending him."
Criminal defense Attorney | Oct 23
Relationship: Opposing Counsel on matter
"I crossed swords with Alex in trial several times when I was a deputy public defender in Kern County and Alex was a Deputy DA. Alex was smart, fierce, and zealous. His knowledge of the law was impressive and he absolutely gave me a run for my money every time we went to trial together. He was definitely committed to his role and professional obligations as a DA and I am sure that the same is true now that he has devoted his skills, experience, and knowledge to the defense side of criminal law. Any client of Alex is sure to be afforded the best defense possible. I can personally attest to the fact that if you hire Alex to defend you you'll have a smart, aggressive, and fearless attorney in your corner who will fight for you to the very end. Any client of Alex Harper is fortunate indeed."
DUI and DWI Attorney | Jul 31
Relationship: Fellow lawyer in community
"I endorse Alex. As a former prosecutor he has a big advantage. "They know that he knows what they know". If you are in or near Oakland do yourself a favor and schedule an interview."
Criminal defense Attorney | Jul 09
Relationship: Co-worker
"I endorse this lawyer. Mr. Harper and I worked together as deputy district attorneys in the early stages of our careers in the felony trial division at KCDA. Alex is a dedicated lawyer who will fight for you and seek justice. He has also proudly and honorably served our country in uniform. If you are in the East Bay and have a serious criminal matter, he is without a doubt your guy!"
Criminal defense Attorney | May 29
Relationship: Fellow lawyer in community
"I endorse this lawyer. Excellent lawyer with an impressive resume of skilled legal work. This is an attorney who will work hard to help you, results matter to him."
Unknown Attorney | May 29
Relationship: Fellow lawyer in community
"I endorse this lawyer. Mr. Harper is a skilled and respected member of the legal community. He is a zealous advocate for the rights and interests of his clients."
Criminal defense Attorney | May 28
Relationship: Fellow lawyer in community
"I endorse Alexander. He is a highly skilled attorney that is well respected in the legal community."
Criminal defense Attorney | Feb 20
Relationship: Opposing Counsel on matter
"i worked against Mr. Harper on numerous cases during the time he was a DA in Bakersfield. He always was well prepared, knowledgeable on complex legal issues, and kept his cool under fire. He is one of the most genuine, honest and hardworking DA's that I have ever worked against (maybe that is why he left) . I know his days as a DA are over, and I am excited to see how far his career will go. I strongly recommend Alex to any potential client."
Criminal defense Attorney | Dec 13
Relationship: Friend
"I have known Alex Harper since 1997. He consistently displays outstanding honor, courage and commitment. He brings great attention to detail to his law practice. I proudly give him my highest endorsement as a Criminal Defense Attorney."
Criminal defense Attorney | Dec 11
Relationship: Fellow lawyer in community
"Alex is a tenacious and dedicated attorney. His vast experience in criminal law, on both sides, gives him excellent insight into the process and most effective way to ensure justice is done. I highly recommend Alex."
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Employment and labor
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