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About Me

John J. Tenn is a seasoned litigator whose practice focuses on Personal Injury, Criminal defense and DWI defense in New Hampshire. John has obtained multi-million dollar recoveries for his automobile and motorcycle accident clients. John has more than 20 years experience defending clients charged with DUI and other criminal offenses. John has been recognized by “Best Lawyers”, “Superlawyers” and Top 100 Trial Lawyers in America. John is admitted to practice in all state and federal courts in both New Hampshire and Massachusetts, and is admitted to practice in the United States Supreme Court. John is also an active member of the American Bar Association, and the New Hampshire and Manchester Bar Associations.

John received his J.D. from the Catholic University of America, Columbus School of Law in 1992, after graduating from Boston University with a Bachelor of Science in Business Administration. He also serves as a judge for the Harvard Law School First-year Moot Court Program.

A lifelong resident of New Hampshire, John attended Manchester Central High School. Among his many community activities, John is a graduate of the Greater Manchester Chamber of Commerce Leadership Program. John is a founding member of the Law Enforcement Appreciation Committee, and participates in the Lawyer in Every School program. John is a former Police Commissioner who served the citizens of the City of Manchester, NH for six (6) years.


Photos and Videos

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Practice Areas


  1. Personal Injury: 40%
    23 years
  2. DUI & DWI: 40%
    23 years
  3. Motorcycle Accident: 15%
    23 years
  4. Criminal Defense: 5%
    23 years



Free Consultation (30 minutes)

Payment Types:

Cash, Check, Credit Card

Attorney Endorsements

30 total 

  • Philip M. Kalil

    John is a highly respected member of the criminal defense bar in New Hampshire. He is extremely intelligent and motivated. Numerous lawyers, including myself, defer to his knowledge and experience in the handling of a criminal case. I endorse Attorney Tenn without reservation.


    Philip Kalil DUI & DWI Attorney
    Relationship: Fellow lawyer in community

  • Michael S. Waddington

    I endorse John. 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


NHAuthorized to practice law199206/21/2010

Professional Misconduct

We have not found any instances of professional misconduct for this lawyer.
Avvo Contributions
Legal Answers
Award NameGrantorDate Granted
Super Lawyers / New EnglandSuper Lawyers2012
Top 100 Trial Lawyers in AmericaThe American Trial Lawyers Association2010
Top Trial Lawyers in AmericaMulti-Million Dollar Advocates Forum2010
Chambers USA: America's Leading Lawyers for BusinessChambers USA: America's Leading Lawyers for Business2010
Top Trial Lawyers in AmericaMillion Dollar Advocates Forum2010
Certificate of Attendance: DUI ExtravaganzaNew Hampshire Association of Criminal Defense Lawyers2009
Certificate of Attendance: DWI Defend with IngenuityNational Assoc. of Criminal Defense Lawyers & NCDD2008
Top 100 Trial Lawyers in AmericaThe American Trial Lawyers Association2007
Evidentiary Breath Alcohol TechnicianIndustrial Training and Design2006
NHTSA/IACP Standardized Field Sobriety Testing PractitionerC.E.S. Consulting, Inc.2006
Graduate-Chamber of Commerce Leadership ProgramGreater Manchester Chamber of Commerce1995
Work Experience
TitleCompany NameDuration
OwnerTenn And Tenn, PA1995 - Present
Associate Trial AttorneySheehan, Phinney, Bass + Green1992 - 1995
Law Clerk-InternDistrict of Columbia Superior Court1991 - 1992
Association NamePosition NameDuration
National College of DUI DefenseMember2006 - Present
Massachusetts Bar AssociationMember2003 - Present
City of Manchester Police CommissionPolice Commissioner2002 - 2008
Manchester Crimeline, Inc.Board Member2002 - 2004
Manchester School District-Law Enforcement App. CommiteeBoard Member1999 - 2003
National Association of Criminal Defense LawyersMember1997 - Present
NH Asssociation of criminal Defense LawyersMember1995 - Present
American Bar AssociationMember1994 - Present
Phi Alpha DeltaMember1992 - Present
New Hampshire Bar AssociationMember1992 - Present
Association of Trial Lawyers of AmericaMember1991 - Present
Daniel Webster-Batchelder American Inn of CourtMemberN/A
Legal Cases
Case NameOutcome
State v. Dave D.Not Guilty of DWI after trial.
Motorcycle Accident caseSettled prior to trial $2,225,000.00
State v. Mike MNot Guilty after Trial
See all Legal Cases 
Publication NameTitleDate
New Hampshire Union LeaderMotorcycle Insurance coverages2010
Oxx Cycle-NH's Motorcycle MagazineQ&A with John Tenn-Motorcycle Lawyer2008
New Hampshire Union LeaderAutomobile Accident Guide2004
New Hampshire Union LeaderMotorcycle Insurance Medical Payment Coverage2003
School NameMajorDegreeGraduated
Catholic University of America, the Columbus school of LawLawJD - Juris Doctor1992
Boston UniversityBusiness AdministrationBS - Bachelor of Science1989
Speaking Engagements
Conference NameTitleDate
Manchester MCMotorcycle Injuries and The Law2009
A Lawyer in Every SchoolDWI Law in New Hampshire2005
A Lawyer in Every SchoolCriminal Defense and The Right to Remain Silent2004
Life Cycle of a Law FirmLaw Practice Management1998