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About me

I grew up knowing I was going to be a defense attorney.  I never conceived of any other profession.  Once  I started practicing criminal defense, I found that while any lawyer will take a DUI case, few had dedicated the time and effort to learning the science well enough to look for possible defenses in almost any case.  Instead, they just got good at telling their clients they needed to plead guilty without thouroghly evaluating the case.  I do my best to never let that happen with my clients' cases.


Photos and videos

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Practice areas


  1. DUI & DWI: 100%



Retainer (sometimes)

Payment types:

Cash, Check, Credit card

Attorney endorsements

163 total 

Are you an attorney? Endorse this lawyer

  • Robert Mckinley Carter

    I endorse this lawyer. Mr. Pettis is a great lawyer and wonderful human being. When it comes to DUI & DWI law, he is my go to guy.


    Robert Carter Personal injury Attorney
    Relationship: Fellow lawyer in community

  • Hector Jesus Tamayo

    Few if any possess the knowledge and skill set needed to tenaciously defend a DUI that Jon Pettis has He is a skilled negotiator and aggressive trial attorney. His knowledge of the science and intricacies of DUI cases are second to none.


    Hector Tamayo Criminal defense Attorney
    Relationship: Fellow lawyer in community

Contact info

591 Camino de la Reina, Suite 1125
San Diego, CA, 92108


We have not found any instances of professional misconduct for this lawyer.
Avvo contributions
Legal answers
Award nameGrantorDate granted
Moot Court Award WinnerUCLA School of Law1994
Work experience
TitleCompany nameDuration
Chief Trial CounselLaw Office of Jon M. Pettis1996 - 2012
InternSan Diego Public Defenders Office1995 - 1996
InternNorthern California Legal Services1994 - 1994
InternUCLA Student Legal Services1992 - 1993
Association namePosition nameDuration
National College of DUI DefenseMemeber2005 - Present
National Association of Criminal Defense LawyersMember2003 - 2008
Legal cases
Case nameOutcome
People v. Kyle M.One case was dismissed and the second plead to a wet reckless.
People v. Alan F.The weapons charge was dismissed. Client plead to being a public nuisance which will be dismissed in 18 months and a wet reckless.
People v. John W.Case dismissed.
See all legal cases 
Publication nameTitleDate
DS Criminal Law Group Web SiteDS Criminal Law Group2011
School nameMajorDegreeGraduated
University of California at Los Angeles School of LawLawJD - Juris Doctor1995
University of California - Santa CruzHistory and Politics Double Major with HonorsOther - Bachelors1992
Speaking engagements
Conference nameTitleDate
DUI Defense AmmunitionDUI Science and Strategies2012