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About me

Frank Henninger has been a practicing attorney in Harford County and the surrounding area since 1992. During law school, he served as the judicial clerk for the Honorable Alfred L. Brennan of the Circuit Court for Baltimore County, Maryland. He has worked with thousands of clients in the area of Criminal and DUI/DWI defense.


Frank received his law degree from the University of Baltimore School of Law, and his undergraduate degree from the University of Dayton. He is a member of the Maryland Criminal Defense Attorney Association, the National College for DUI Defense, the Maryland State Bar Association, the Harford County Bar Association, and the Fourth Circuit of the United States District Court.


He is a certified Field Sobriety Test Administrator. Upon completion of the same training course given to Maryland law enforcement officers for administering the Standardized Field Sobriety Tests, he received a score of 100% on the final exam.


Practice areas


  1. DUI & DWI: 37%
    24 years
  2. Criminal Defense: 28%
    24 years
  3. Speeding Ticket: 25%
    24 years
  4. Personal Injury: 10%
    10 years


Payment types:

Cash, Check, Credit card

Attorney endorsements

4 total 

Are you an attorney? Endorse this lawyer

  • Colleen Ferg Helmlinger

    I endorse this lawyer.


    Colleen Helmlinger Real estate Attorney
    Relationship: Fellow lawyer in community

  • Rajiv K Goel

    Frank is a highly regarded criminal defense attorney in the community, combining keen legal skills with strong advocacy skills.


    Rajiv Goel Estate planning Attorney
    Relationship: Fellow lawyer in community

Contact info

Henninger & Henninger, LLC

5 South Hickory Avenue
Bel Air, MD, 21014-3732


We have not found any instances of professional misconduct for this lawyer.
Avvo contributions
Legal answers
Award nameGrantorDate granted
Peer Review RatedMartindale-Hubbell2016
NHTSA DWI Detection Standardized Field Sobriety Testing ProgramLa Pier & Associates2005
Work experience
TitleCompany nameDuration
Managing PartnerHenninger & Henninger, LLC2002 - Present
Association namePosition nameDuration
Maryland Criminal Defense Attorney AssociationMember2000 - Present
Harford County Bar AssociationMember2000 - Present
Maryland State Bar AssociationMember1994 - Present
National College of DUI DefenseMemberN/A
School nameMajorDegreeGraduated
University of Baltimore School of LawLawJD - Juris Doctor1992
University of DaytonEconomics & American StudiesUndergraduate Degree1986