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About me

Ohio Personal Injury Attorney:


Thomas J. Diehl has been practicing law in Southwest Ohio since 1988.  He has been selected as a Fellow of the Litigation Counsel of America, an invitation only trial honorary society consisting of less than one-half of one percent of American lawyers.  Mr. Diehl is also a member of the Million Dollar Advocate Forum, which is limited to attorneys who have won million and multi-million dollar verdicts, awards or settlements.  The organization was founded in 1993 and less than one percent of all U.S. lawyers are members.  Mr. Diehl focuses his practice on representing persons injured as the result of other parties’ negligence.  He has, over the course of his 20+ years of practice, successfully handled hundreds of automobile, truck and motorcycle accident cases, as well as cases involving persons injured by defective products, animal attacks, and pharmaceutical errors.


Mr. Diehl grew up in Centerville, Ohio and graduated from Centerville High School in 1981.  After graduating from Miami University and the University of Cincinnati, College of Law, Mr. Diehl passed the Ohio and United States District Court, Southern District of Ohio, Bar examinations.  Since 1988, Mr. Diehl has been licensed and been in good standing with the Ohio Supreme Court and Federal District Court.  He has been in private practice with his main office in Lebanon, Ohio since 1989.


Tom’s cases have been featured on 20/20 News, National Public Radio, and other publications of general circulation.  He was lead counsel in many cases published in Ohio including Bemmes v. Public Employee Retirement Board (1995), 102 Ohio App.3d 782; Togo International, Inc. v. Mound Steel Corp. (1998), 106 App.3d 282.

Tom served as an acting judge for the Warren County Court in Lebanon, Ohio from 2001 through 2005 and is active in the Ohio Association for Justice.


Tom handles cases in all parts of Southwest Ohio including Warren, Butler, Montgomery, Clinton, Clermont, Greene, and Hamilton Counties.  Tom works with doctors, nurse consultants, vocation consultants, and economists to thoroughly and properly document his clients’ losses and damages.  He stays abreast of personal injury case law and legislative enactments affecting his clients.


Photos and videos

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Practice areas


  1. Personal Injury: 100%
    27 years, 500 cases



Contingent (33-40%), Free consultation (60 minutes)

Payment types:

Cash, Check, Credit card

Attorney endorsements

8 total 

Are you an attorney? Endorse this lawyer

  • Glenn Tadaomi Honda Jr.

    I endorse this lawyer.


    Glenn Honda Car accident Attorney
    Relationship: Fellow lawyer in community

  • John Michael Hands

    I endorse this lawyer.


    John Hands Litigation Attorney
    Relationship: Fellow lawyer in community


We have not found any instances of professional misconduct for this lawyer.
Avvo contributions
Legal answers
Award nameGrantorDate granted
BV RatedMartindale-Hubbell2015
Top 100 Trial LawyersNational Trial Lawyers2011
Life MemberMillion Dollar Advocates Forum2005
Community ServiceLebanon Chamber2004
FellowLitigation Counsel of America2001
Work experience
TitleCompany nameDuration
PartnerDiehl & Hubbell, LLC1988 - Present
Acting JudgeWarren County Court2001 - 2006
OwnerThomas J. Diehl & Company1988 - 2011
Association namePosition nameDuration
National Trial Lawyers AssociationMember2010 - Present
National Trial LawyersAffiliate Member2010 - Present
Million Dollar Advocates ForumLifetime Member2005 - Present
Litigation Counsel of AmericaFellow2001 - Present
Ohio Association for JusticeAssociate Member1998 - Present
Warren County Bar AssociationMember1989 - Present
Cincinnati Bar AssociationMember1989 - Present
Ohio State Bar AssociationAssociate Member1987 - Present
American Bar AssociationMember1989 - 1995
Legal cases
Case nameOutcome
Car Accidentsettlement/verdict
Wrongful Deathsettlement
Dog BiteN/A
See all legal cases 
Publication nameTitleDate
TJD PublicationsInjury Newsletter2014
WordpressCar Accident FAQ2014
TJD PublicationsThomas J. Diehl Newsletter2013
Accident and Injury ReporterOhio Case Law Analysis - Angel v. Reed2013
7 Big Mistakes To AvoidYour Ohio Motor Vehicle Accident Claim2011
TJD PublicationsPersonal Injury Co-Counsel ReporterN/A
School nameMajorDegreeGraduated
University of Cincinnati College of LawLawJD - Juris Doctor1988
Miami University of OhioBusinessBS - Bachelor of Science1985
Speaking engagements
Conference nameTitleDate
25under25Small Firm Work/Life Balance2011
UC Law Round TableSmall Firm Trends2010
Diehl & Hubbell GalaHiring an Injury Lawyer2006
Lunch and LearnRobinson v. BatesN/A
CLESubrogation in Personal InjuryN/A