Skip to main content

About me

My practice is, and always has been committed to criminal defense.  I have NEVER
prosecuted, and have ALWAYS fought for the rights of the accused.  Over the
years I have handled thousands of criminal cases, more then half of which where
DUI or alcohol related offenses.


To stay at the top of my profession, I have attended numerous legal education
seminars, the majority of which involved specialized training in DUI and
criminal defense.


  • Bachelor of Arts in History - Arizona State University

  • Post Baccalaureate Certification in Secondary Education  - Arizona State

  • Juris Doctor - University of Arizona

  • Trial Institute at University of Wyoming College of Law

  • NACDL National
    Criminal Defense College
    - Mercer University School of Law

  • Member of National Association
    of Criminal Defense Attorneys (NACDL)

  • Member of Arizona Attorneys For Criminal Justice (AACJ)

  • Former Pima County Assistant Public Defender

  • Years of experience litigating criminal cases ranging from misdemeanor bench
    trials, DUI jury trials, and full felony jury trials

  • Faculty Speaker at AACJ Aggressive Defense of The Accused Driver 2005

  • Speaker at Arizona Public Defender's Association 2005 Annual Seminar

  • Speaker at Pima County Indigent Defense 2005 Contract Attorney CLE

  • Extensive knowledge and experience litigating Misdemeanor, Extreme, and
    Aggravated (felony) DUI as well as other alcohol/drug related


Practice areas


  1. DUI & DWI: 90%
    18 years
  2. Criminal Defense: 10%
    18 years



Fixed (sometimes), Free consultation (60 minutes)

Payment types:

Cash, Check, Credit card

Attorney endorsements

10 total 

Are you an attorney? Endorse this lawyer

  • Alec John Hanus

    I endorse this lawyer. James Charnesky is an extremely knowledgeable and thorough attorney. I have litigated cases against him and sought his advice as a fellow defense attorney. He fights for his clients.


    Alec Hanus DUI and DWI Attorney
    Relationship: Fellow lawyer in community

  • Joel Chorny

    I endorse this lawyer because he is the ultimate professional. He is always prepared and makes sure he is the most knowledgeable person in court not only about the relevant law but of his case. He is respectful and fair to his clients. He is an effective advocate and litigator who does excellent work.


    Joel Chorny Criminal defense Attorney
    Relationship: Fellow lawyer in community

Contact info

Charnesky & Dieglio L L C

317 South Convent Avenue

Tucson, AZ, 85701-2267


AZActive 199804/16/2016
We have not found any instances of professional misconduct for this lawyer.
Avvo contributions
Legal answers
Award nameGrantorDate granted
The TOP 20 Lawyers in TucsonProfessional Research Services / Tucson Life Styles2011
Trial Practice InstituteNational Criminal Defense College2003
Work experience
TitleCompany nameDuration
PartnerLaw Offices of Charnesky & Dieglio, L.L.C.2003 - Present
Assistant Public DefenderPima County Public Defender's Office1998 - 2002
Association namePosition nameDuration
National Association of Criminal Defense LawyersMemberN/A
Arizona Attorneys for Criminal JusticeMemberN/A
School nameMajorDegreeGraduated
University of Arizona College of LawLawJD - Juris Doctor1998
Arizona State UniversityHistoryBA - Bachelor of Arts1987
Speaking engagements
Conference nameTitleDate
28th Annual Aggressive Defense of the Accused Impaired Driver SeminarChallenging Breath Test Results2015
APDA ConferenceDUI Opening Statements2014
27th Annual Aggressive Defense of the Accused Impaired Driver SeminarThings That Work - Winning Strategies2014
APDA 2008 ConferencePolice Conducted Blood Draws2008
APDA 2007 ConferencePolice Conducted Blood Draws2007
20th Annual Aggressive Defense of the Accused Impaired DriverCop Blood Draw Update2007
APDA 2006 ConferencePolice Conducted Blood Draws2006
19th Annual Aggressive Defense of the Accused Impaired DriverCop Blood Draw Update2006