Jon Martinez

Jon Martinez

5.0
Rating: 8.0

Licensed for 18 years

Criminal defense Lawyer at Phoenix, AZ
Practice Areas: Criminal Defense, DUI & DWI, Violent Crime ... +2 more

40 N. Central Avenue, Suite 1400, Phoenix, AZ

About Jon

Biography

Practice Areas

Fees and Rates

Cost

Free Consultation

$0 first 60 minutes

Retainer

Always


Payment Methods

  • Cash
  • Check
  • Credit Card

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Licenses

Licensed in Arizona for 18 years

State: Arizona

Acquired: 2007

Active

No misconduct found

Location

Jon M. Martinez Criminal Law Group

40 N. Central Avenue, Suite 1400, Phoenix, AZ, 85048

Jon M. Martinez Criminal Law Group

40 N. Central Avenue, Suite 1400, Phoenix, AZ, 85004-4436

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Jon Martinez's Reviews

Avvo Review Score

5.0 /5.0

17 Client Reviews

Filter Avvo Reviews (17) Refine reviews to match your needs. Use the filters to quickly surface reviews that align with your case or priorities.

Showing 1 - 2 of 2 reviews | Communication Style

Posted by Nadia | July 19, 2013 | Criminal Defense

More Than Just Another Attorney!

My husband and I first worked with Jon during a criminal traffic case in which he was able to get two criminal traffic charges dropped down to a minor speeding ticket that the prosecutor was willing to let my husband go to traffic school and have everything completely washed away. Unfortunately, the ...judge would not let that happen as he put it, " I can't let him go with nothing." Either way, we were extremely happy with the outcome even if the judge did not cooperate. I have now hired Jon to defend my husband against Manslaughter charges that could land him 10-30 years in prison. He has already made what has become a living nightmare for me and my daughter, a much more bearable situation. I feel as though I have hired a friend and teammate, instead of an attorney. His professional and personable demeanor is beyond compare. I feel confident he will do anything and everything not only to help my husband but to help me and my daughter through the entire process as well. There is something to be said about a good attorney, but Jon is more than that. He honestly cares and is a compassionate man. Do not trust your or your family's future to anyone else.

Posted by Alex | September 19, 2011 | Violent Crime

GREAT LAWYER!

Mr. Martinez was a true delight to work with, and I’m lucky to have found him when I did. I was charged with aggravated assault with a deadly weapon and assigned a public defender that advised me to take a plea that would send me to prison for 5 years. Before going any further, I found Mr. Martinez... and spoke with him about my situation, and was lucky enough to have him take my case. Mr. Martinez worked tirelessly on my behalf, and explained everything to me. I felt like Mr. Martinez really cared about my well being and my case, and I could see that he was going to do anything in his power to help. Every step of the way Mr. Martinez explained what was going on and treated me like a human being, rather than just another criminal trying to get out of trouble. Through his tenacious effort and in-depth knowledge, he was able to literally save my life. He got my case dismissed with NO time to serve. The case was dismissed this week. Mr. Martinez stuck with me every step of the way and explored every avenue to try and make this right. I would recommend Mr. Martinez without any hesitation to anybody who wants to work with a great person, a tough individual, a hard-worker, and someone who actually cares about your case and your personal situation.

See All Client Reviews

Jon Martinez's Lawyer Endorsements

Endorse Jon
Ryan Spencer Tait headshot
Ryan Tait

Criminal defense lawyer | Jan 27

Relationship: Worked together on matter

"Jon and I began our careers together at the Prosecutor's office. Early on, Jon developed the reputation of being a fearless, aggressive and effective advocate. His unabashed zeal for fighting in trial has produced tremendous results for his clients time and again."

Jefferson M Simmons headshot
Jefferson Simmons

Criminal defense lawyer | Jan 09

Relationship: Fellow lawyer in community

"Jon has the knowledge and experience in DUI and criminal cases to get great results for clients. I endorse this lawyer."

John Eugene Kelly headshot
John Kelly

Criminal defense lawyer | Aug 11

Relationship: Co-worker

"Jon and I previously worked together at the Maricopa County Attorney's Office. I know Jon to be especially knowledgeable in DUI and vehicular matters. Jon works diligently for his clients and I endorse him."

Shane M Miller headshot
Shane Miller

Criminal defense lawyer | May 07

Relationship: Fellow lawyer in community

"I previously worked with Mr. Martinez when he was a prosecutor, and I have firsthand knowledge that he is an effective advocate."

Roy C Whitehead headshot
Roy Whitehead

Criminal defense lawyer | Nov 09

Relationship: Fellow lawyer in community

"I have known Mr. Martinez for many years. I would not hesitate to recommend him to anyone in need of a great attorney."

Tait D Elkie headshot
Tait Elkie

Criminal defense lawyer | Jul 26

Relationship: Fellow lawyer in community

"Jon is an excellent trial lawyer who genuinely takes an interest in every case and client. He has a wealth of knowledge and breadth of experience that serves his clients well in the area of criminal defense."

Kristopher Ryan Califano headshot
Kristopher Califano

DUI and DWI lawyer | Jul 19

Relationship: Opposing Counsel on matter

"I endorse this lawyer. Jon used to be a vehicular crimes prosecutor. He and I have battled it out in a few cases. Jon is very knowledgeable and an excellent attorney."

Adam Feldman headshot
Adam Feldman

Criminal defense lawyer | Jul 19

Relationship: Fellow lawyer in community

"I endorse this lawyer. I have worked with Mr. Martinez in the legal community for several years. He is a very good attorney that gets great results for his clients."

James E Simpson headshot
James Simpson

Criminal defense lawyer | Jul 19

Relationship: Opposing Counsel on matter

"I highly recommend Jon Martinez. I have worked with Jon both as opposing counsel and as a fellow criminal defense attorney. He truly cares for his clients and I would not hesitate to recommend him to anybody who needed his help."

Craig Jacob Rosenstein headshot
Craig Rosenstein

Criminal defense lawyer | Jul 19

Relationship: Fellow lawyer in community

"I have known Jon for years and know him to be an aggressive and extremely competant advocate for his client's. I highly endorse him as a lawyer."

Woodrow C Thompson headshot
Woodrow Thompson

Criminal defense lawyer | Jul 10

Relationship: Fellow lawyer in community

"I endorse this lawyer. Jon is an excellent attorney who works hard for his clients."

Bret Andrew Royle headshot
Bret Royle

Criminal defense lawyer | Jun 13

Relationship: Fellow lawyer in community

"I endorse this lawyer."

Arthur J Hall headshot
Arthur Hall

Criminal defense lawyer | Feb 01

Relationship: Fellow lawyer in community

"I first met Mr. Martinez as a prosecutor where he earned the reputation as a knowledgeable and aggressive trial attorney. Mr. Martinez used his understanding of the law and legal skills to move up quickly as a prosecutor where he handled many very serious cases. As a defense attorney Mr. Martinez has utilized his knowledge and skills to aggressively represent his clients and I'm confident in giving him my endorsement."

Dianne N Sullivan headshot
Dianne Sullivan

Criminal defense lawyer | Jan 11

Relationship: Fellow lawyer in community

"I endorse this lawyer. I worked with Jon when he was both a Maricopa County Attorney and when he was an associate at the Knowles Law Firm. He is an excellent attorney and litigator. I have seen him accomplish great things on behalf of his clients. He is also well respected by prosecutors, fellow attorneys, and the bench. He is one of the few attorneys I would consider calling if I was ever charged with a crime."

Kaitlin Sofia Verdura headshot
Kaitlin Verdura

Criminal defense lawyer | Jan 10

Relationship: Opposing Counsel on matter

"Jon Martinez is an excellent trial lawyer and I highly recommend him to anyone in need of an experienced and talented criminal defense attorney. As a former prosecutor, I have had the unique opportunity to work with Jon as opposing counsel. As a result, I can say without hesitation that Jon is a fantastic trial attorney and major contender within the Phoenix legal community. Jon fights hard for his clients and leaves no stone unturned. Through diligent investigation, Jon often finds and addresses legal and factual flaws in the state’s case that make the difference between a prison offer and a dismissal. I have seen first hand how Jon's hard work and commitment to his clients has resulted in the outright dismissal of very serious, class two felony charges. If you are looking for results that count, you can’t go wrong with Jon Martinez."

Aaron Michael Black headshot
Aaron Black

Criminal defense lawyer | Sep 20

Relationship: Fellow lawyer in community

"I have worked with and against Mr. Martinez for years. He is an extraordinary defense attorney who was also a prosecutor. Mr. Martinez previously prosecuted serious vehicular crimes in Maricopa County, Arizona. This experience gives him an insight that few other defense attorneys have in Arizona. I strongly endorse Mr. Martinez."

John K Dosdall headshot
John Dosdall

Criminal defense lawyer | Sep 19

Relationship: Fellow lawyer in community

"I endorse this lawyer."

David Black headshot
David Black

Criminal defense lawyer | Sep 18

Relationship: Worked together on matter

"I endorse this lawyer. He is as worthy an advocate as there is. Jon has superior confidence in the courtroom and at the negotiationstable. I recommend jon to anyone seeking top notch representation!"

Patrick Edward Chapman headshot
Patrick Chapman

Unknown lawyer | Sep 18

Relationship: Fellow lawyer in community

"I endorse this lawyer."

Kyle Green headshot
Kyle Green

Criminal defense lawyer | Sep 15

Relationship: Fellow lawyer in community

"Jon Martinez is an excellent lawyer. He has a very thorough knowledge of the law and has lots of trial experience which will benefit any potential client looking for a lawyer. He works hard, provides sound advice, and does everything he possibly can for his clients. I've seen him get tremendous results for his clients. I would recommend anybody needing a lawyer to use Jon's services."

View All Endorsements
Matthew William Bartz headshot
Matthew Bartz

Criminal defense lawyer

Kristopher Ryan Califano headshot
Kristopher Califano

Criminal defense lawyer

Tait D Elkie headshot
Tait Elkie

Criminal defense lawyer

Adam Feldman headshot
Adam Feldman

Criminal defense lawyer

Dianne N Sullivan headshot
Dianne Sullivan

Family lawyer

Arthur J Hall headshot
Arthur Hall

Criminal defense lawyer

Roy C Whitehead headshot
Roy Whitehead

DUI and DWI lawyer

Brian Douglas Sloan headshot
Brian Sloan

DUI and DWI lawyer

Kaitlin Sofia Verdura headshot
Kaitlin Verdura

Criminal defense lawyer

Craig Jacob Rosenstein headshot
Craig Rosenstein

DUI and DWI lawyer

Woodrow C Thompson headshot
Woodrow Thompson

Criminal defense lawyer

Aaron Michael Black headshot
Aaron Black

DUI and DWI lawyer

James E Simpson headshot
James Simpson

Criminal defense lawyer

David Black headshot
David Black

Criminal defense lawyer

Kyle Green headshot
Kyle Green

Criminal defense lawyer

Experience

Rating:  8.0 (Excellent)

Honors

2009

Attorney of the Month, Maricopa County Attorney's Office

2008

Attorney of the Month, Maricopa County Attorney's Office

2008

Attorney of the Month, Maricopa County Attorney's Office

Work Experience

2009 - 2011

Attorney, Knowles Law Firm, PLC

2007 - 2009

Deputy County Attorney, Maricopa Country Attorney's Ofc

Associations

American Bar Association

Member

Major Crime’s Vehicular division

Member

Maricopa County Attorney’s Office

Former Prosecutor

American Association for Justice

Member

National Association of Criminal Defense Lawyers

Member

Justia

Member

Sample of Legal Cases

State v. Velasquez

Not Guilty

State v. Winterbotham

Not Guilty

State v. Noe

Dismissed

State v. Lewis

Dismissed

State v. Davis

Dismissed at trial

State v. Valdez

Not Guilty After Trial

State v. Dixon

Dismissed

State v. Biscoglio

Dismissed

State v. Wimmer

Dismissed

State v. Heiei

Dismissed

See More Legal Cases

Education

N/A

Boston University School of Law

Juris Doctorate

N/A

Boston University

Master

N/A

University of Arizona

BS - Bachelor of Science

N/A

University of Arizona

BS - Bachelor of Science

Languages

English

Spanish

Activity

Avvo Rating

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