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About me

Jeffrey O'Holleran has had a successful career as a criminal defense attorney both in private practice and as a Public Defender. He attended the University of Colorado where he earned a BA in Psychology and his Juris Doctor. While at law school he worked as a Production Editor for the Journal on Telecommunications and High Technology Law.


Jeffrey currently works for the Office of Secretary of State in Wyoming and is part of the faculty at the University of Colorado at Boulder.


In his spare time, Jeffrey is a programmer. He has written on the subject, having published an article on the history of video game censorship. His work was cited in a brief submitted to the U.S. Supreme Court in the case of Schwarzenegger v. Entertainment Mercants Association.


Languages spoken: Spanish, English

Photos and videos

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Practice areas


  1. Domestic Violence: 30%
    6 years
  2. Criminal Defense: 30%
    6 years, 1.4 thousand cases
  3. Violent Crime: 20%
    6 years
  4. DUI & DWI: 20%
    6 years



Fixed (always), Free consultation (60 minutes)

Payment types:

Cash, Check

Attorney endorsements

5 total 

Are you an attorney? Endorse this lawyer

  • Mark A. Blechman

    Jeffrey is an excellent attorney. When he speaks in court, people listen. I worked alongside Jeffrey as a public defender, and I was invariably amazed by his profound ability to immediately earn the trust of his clients, his effectiveness in persuading the judge, and his sound credibility in speaking to members of a jury. Jeffrey is a unique type of litigator in that he is an "outside-of-the-box" thinker, which is a powerful approach in defending an individual accused of a crime.


    Mark Blechman Criminal defense Attorney
    Relationship: Worked together on matter

  • Michael S. Waddington

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


    Michael Waddington Military law Attorney
    Relationship: Fellow lawyer in community

Contact info

O'Holleran Law Group, LLC

123 N. College Ave.
Suite 200
Fort Collins, CO, 80524


We have not found any instances of professional misconduct for this lawyer.
Avvo contributions
Legal answers
Award nameGrantorDate granted
Public Interest Service AwardUniversity of Colorado School of Law2010
Work experience
TitleCompany nameDuration
Managing PartnerO'Holleran Law Group, LLC2013 - Present
AttorneyKingsford Law Group2011 - 2011
Deputy Public DefenderColorado State Public Defender2011 - 2013
Certified Student AttorneyColorado State Public Defender2010 - 2010
Law ClerkAttorney General Of Wyoming2009 - 2009
Association namePosition nameDuration
Colorado Bar AssociationMember2010 - Present
Journal on Telecommunications and High Technology LawProduction Editor2008 - 2010
Intellectual Property Society - University of Colorado ChapterVice President2008 - 2010
Federalist Society - University of Colorado ChapterTreasurer2007 - 2010
Flatirons ReviewProduction Editor2004 - 2008
Legal cases
Case nameOutcome
People v. S.R. (appeal)Won on appeal, remanded to county court
People v. E.T.Not guilty at trial
People v. C.T.Case dismissed
See all legal cases 
Publication nameTitleDate
Journal on Telecommunications and High Technology LawBlood Code: The History and Future of Video Game Censorship2010
School nameMajorDegreeGraduated
University of Colorado School of LawLawJD - Juris Doctor2010
University of Colorado - BoulderPsychologyBA - Bachelor of Arts2007
Speaking engagements
Conference nameTitleDate
Speaking Event for the Colorado State University Department of Sociology - Criminal Justice OrganizationA Guide to Police Encounters2014
La Ley Radio, KJJD 1170 AMLegal Q&A with Attorney Jeff O2014
Public Defender TrainingCounty Court Basics2013
Public Defender TrainingHow Not To Screw Up In County Court2012
Terrorism Policy with Dr. Harvey KushnerAmerican-Israeli Policy on Radicalism2008
Status of the War on Terror and the iraq WarAmerican-Islamic Relations2007