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Jonathan Brian Manley

also known as Jon Manley

About me

Jonathan Manley was born and raised on Long Island. After graduating from Hofstra University School of Law he joined the Suffolk County District Attorney’s Office. As an Assistant District Attorney, Mr. Manley’s initial focus was in the investigation of large scale white-collar crimes, including embezzlement, identity theft, insurance fraud and other financial crimes. Primarily though, Mr. Manley was responsible for the investigation and prosecution of all tax crimes in Suffolk County. These crimes involved personal income tax evasion, payroll taxes and sales tax fraud. His efforts in this field resulted in an award from the New York State Tax Department’s Criminal Investigative Division for Outstanding Achievement.

Mr. Manley finished his career as a prosecutor with the Major Crimes Bureau, handling a wide variety of felony cases, including Burglary, Robbery, Sex Offenses, DWI, Vehicular Crimes and Homicide. These matters were managed from arraignment through trial.
After his retirement from the Suffolk County District Attorney’s Office, Mr. Manley opened The Law Offices of Jonathan B. Manley and has been committed to supplying the best possible representation for his clients.

In addition to his law practice, Mr. Manley is also an Adjunct Professor of Criminal Law, Criminal Procedure and Wills, Trusts and Estate Administration. As a professor, he has taught his students about the value of proper estate planning in order to protect their client’s financial assets and the understanding of one’s constitutional rights in order to protect their client’s personal freedom.

Mr. Manley has received specialized training in the fields of motor vehicle crash reconstruction, the collection of evidence in sex offense cases, DNA, forensic accounting, police investigative practices and litigation techniques.
Jonathan Manley has spent his entire legal career inside of a courtroom. He has the unique combination of investigative and trial experience to resolve all of your legal issues.


Languages spoken: English, Spanish

Photos and videos

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Practice areas


  1. Criminal Defense: 50%
    3 years
  2. DUI & DWI: 25%
    3 years
  3. Personal Injury: 20%
  4. Speeding Ticket: 5%



Fixed (sometimes), Free consultation (30 minutes)

Payment types:

Cash, Check, Credit card

Attorney endorsements

18 total 

Are you an attorney? Endorse this lawyer

  • Brendan Michael Ahern

    Jon Manley is an exceptional attorney that is well-respected by judges, adversaries, colleagues, and his clients. He achieves great results because of his talent and tenacious work ethic. I highly endorse Jon Manley.


    Brendan Ahern Criminal defense Attorney
    Relationship: Fellow lawyer in community

  • Anthony M. La Pinta

    I highly endorse John Manley. John is a very bright, hard working defense attorney with significant experience and knowledge of the law. He is committed to representing the highest standards of our legal community.


    Anthony La Pinta Criminal defense Attorney
    Relationship: Fellow lawyer in community

Contact info

The Law Offices of Jonathan B. Manley

1200 Veterans Memorial Highway
Suite 360
Hauppauge, NY, 11788


NYCurrently registered 200703/07/2016
We have not found any instances of professional misconduct for this lawyer.
Avvo contributions
Legal answers
Award nameGrantorDate granted
Rising Star- Criminal DefenseSuper Lawyers Magazine2014
"10 Best" Attorneys in NYAmerican Institute of DWI Lawyers2014
Top ContributorAVVO2013
Criminal Defense Clients' ChoiceAVVO2013
Top Criminal Defense AttorneyAVVO2013
Top 40 Lawyers Under 40American Society of Legal Advocates2013
Outstanding AchievementNew York State Tax Department2012
Trial AdvocacyNational Institute for Trial Advocacy2006
Work experience
TitleCompany nameDuration
Adjunct ProfessorBriarcliffe College2011 - 2013
Assistant District AttorneySuffolk County District Attorney's Office2006 - 2013
Association namePosition nameDuration
Suffolk County Bar AssociationN/AN/A
Suffolk County Criminal Bar AssociationN/AN/A
Suffolk County Indigent Defender PlanN/AN/A
United States District Court for the Eastern District of New YorkN/AN/A
New York State BarN/AN/A
Legal cases
Case nameOutcome
People v. GaylesReleased
People v. RobinsonClient Released
See all legal cases 
Publication nameTitleDate
NewsdayThree Arrested in ID Theft2013
NewsdayFour Men Arrested in Hate Crime2013
NewsdayWoman Accused of Multiple Burglaries2013
School nameMajorDegreeGraduated
Hofstra University School of LawLawJD - Juris Doctor2006
Rider UniversityPolitical ScienceBA - Bachelor of Arts- Cum Laude2003
Speaking engagements
Conference nameTitleDate
Briarcliffe CollegeCriminal Law2013
Briarcliffe CollegeWills, Trust and Estate Administration Overview2013
Briarcliffe CollegeCriminal Procedure2012
Briarcliffe CollegeCriminal Law2012
NY State Tax DepartmentTax Prosecutions2011