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Nathan D Leonardo

Nathan D Leonardo

Practice areas:

DUI & DWI, Domestic Violence, Federal Crime, Criminal Defense, Personal Injury

About Me


Nathan Leonardo is a trial lawyer practicing in Southern Arizona focusing on criminal defense and personal injury cases.  As a former state and federal prosecutor, he has extensive trial experience. 


After graduating from the University of Arizona College of Law in 1997, Mr. Leonardo clerked for a Pima County Superior Court Judge and then joined the Pima County Attorney's Office as a Deputy County Attorney.  As a Deputy County Attorney, Mr. Leonardo prosecuted a wide range of cases, including DUI, narcotics offenses, property crimes, violent felonies, and homicides. 


After four years at the Pima County Attorney’s Office, Mr. Leonardo spent three years at the United States Attorney’s Office for the District of Arizona.  As an Assistant U.S. Attorney, Mr. Leonardo prosecuted a variety of crimes, primarily related to drug trafficking, alien smuggling, and child pornography.  He also spent nearly two years in the appellate unit, writing numerous appellate briefs on behalf of the government and arguing them in front of the Ninth Circuit Court of Appeals in San Francisco.   


In 2005, Mr. Leonardo left the United States Attorney's Office to start the law firm of Leonardo & Roach, LLC, where he focused on criminal defense and personal injury cases.  In 2009, Mr. Leonardo founded Leonardo Law Offices, PLLC in an effort to provide a greater degree of service and personal attention to his client's and their cases.  Mr. Leonardo is certified by the State Bar of Arizona as a specialist in criminal law.


Languages Spoken: English, Spanish

Practice Areas

Licensed since 1998

  1. DUI & DWI: 50%
    1 year
  2. Criminal Defense: 15%
    1 year
  3. Federal Crime: 15%
  4. Domestic Violence: 15%
  5. Personal Injury: 5%
    1 year



Free Consultation (30 minutes)

Payment Types:

Cash, Check, Credit Card

Attorney Endorsements

6 total 

  • Michael S. Waddington

    I endorse Nathan. He is a highly skilled attorney that is well respected in the legal community.


    Michael Waddington Military Law Attorney
    Relationship: Fellow lawyer in community

  • Jody A Corrales

    I endorse this lawyer.


    Jody Corrales Chapter 7 Bankruptcy Attorney
    Relationship: Fellow lawyer in community

Contact Info

Leonardo Law Offices, PLLC

2 East Congress St. #418
Tucson, AZ, 85701


AZActive 199802/16/2015

Professional Misconduct

We have not found any instances of professional misconduct for this lawyer.
Avvo Contributions
Legal Answers
Award NameGrantorDate Granted
Criminal Law Specialist DesignationState Bar of Arizona2015
Top 100 LawyersThe National Trial Lawyers2015
Nation's Top One PercentNational Association of Distinguished Counsel2015
Top 100 Trial LawyersThe National Trial Lawyers2014
Top 100 Trial LawyersThe National Trial Lawyers2013

Work Experience
TitleCompany NameDuration
N/ALeonardo Law Offices, PLLC2009 - Present
N/ALeonardo & Roach, L.L.C.2005 - 2009
Assistant United States AttorneyUnited States Attorney's Office2002 - 2005
Deputy Pima County AttorneyPima County Attorney's Office1998 - 2002
N/APima County Superior Court1997 - 1998

Association NamePosition NameDuration
National College of DUI DefenseMember2014 - Present
National Trial Lawyers AssociationMember2013 - Present
National Association of Criminal Defense LawyersMember2012 - Present
Arizona Association for Justice (Arizona Trial Lawyers Association)Member2008 - Present
Arizona Attorneys for Criminal JusticeMember2006 - Present
Pima County Bar AssociationMember2005 - Present

Legal Cases
Case NameOutcome
State of Arizona v. J.K.Not Guilty
State of Arizona v. F.L.Case Dismissed
State of Arizona v. F.C.Case Dismissed

See all Legal Cases 

School NameMajorDegreeGraduated
University of ArizonaLawJD - Juris Doctor1997
University of ArizonaEnglishBA - Bachelor of Arts1994
University of ArizonaAnthropologyBA - Bachelor of Arts1994