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John Dennis Duncan

also known as John D. Duncan

About me

John D. Duncan is a Trial Lawyer in Newnan, Georgia, who focuses his practice on serious personal injury and criminal defense.  John is an active member of Georgia Trial Lawyer's Association, and is also a member of the State Bar of Georgia and the Young Lawyers Division. 

As a law student, John interned with the Fayette County Solicitor-General's office where he prosecuted cases under Georgia's Third Year Practice Act.  John cut his teeth as a trial lawyer before State Court Judge W. Fletcher Sams and Fayette County jurors.  John also held a senior editor position with his law school's law journal while maintaining his daytime position of Director of Bands at McNair Middle School.

During college, John was a leader in the music department, orchestrating concerts for local and national events.  After graduation, John began teaching in College Park, Georgia, before starting his legal studies at Atlanta's John Marshall Law School.

John was born and raised in Charleston, South Carolina.  John is the son of an insurance claims adjustor and a nurse, and shares his home with his wife, Sarah.  After graduating from Summerville High School, John went on to study music at Charleston Southern University where he earned a Bachelor of Arts degree.

In his spare time, John enjoys woodworking and spending time with his wife and five dogs.


Photos and videos

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Practice areas


  1. Criminal Defense: 65%
    6 years
  2. Personal Injury: 35%
    6 years



Hourly ($200-250/hour), contingent (20-40%), Fixed (sometimes)

Payment types:

Cash, Check, Credit card

Attorney endorsements

9 total 

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  • Randy Scott Slater

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    Randy Slater Personal Injury Attorney
    Relationship: Fellow lawyer in community

  • John Greel Ralls Jr.

    I endorse this talented and knowledgeable attorney, who is well-respected in the legal community.


    John Ralls Oil & Gas Attorney
    Relationship: Other

Contact info

J. D. Duncan, P.C.

PO Box 71307
1665 Highway 34 E, Suite 300
Newnan, GA, 30265


GAActive Member in Good Standing 200911/07/2015
We have not found any instances of professional misconduct for this lawyer.
Avvo contributions
Legal answers
Award nameGrantorDate granted
Standard Field Sobriety Testing CertificateRon Lloyd Enterprises2010
Excellence for the Future Award - RemediesThe Center for Computer-Assisted Legal Instruction2008
EditorLaw Review, John Marshall Law School2008
Dean's AwardDean, JMLS2008
Dean's AwardDean, JMLS2007
Dean's AwardDean, John Marshall Law School2006
Work experience
TitleCompany nameDuration
AttorneyJ. D. Duncan, P.C.2009 - Present
AttorneyStemberger & Cummins, P.C.2014 - 2015
PartnerPrater, Duncan & Craig, LLC2011 - 2014
AttorneyPrater & Associates2009 - 2011
3rd Year Practice Act ProsecutorFayette County Solicitor-General's Office2008 - 2008
InternFayette County Solicitor-General's Office2007 - 2007
Association namePosition nameDuration
Newnan Coweta Bar AssociationPresident2011 - Present
Georgia Trial Lawyers AssociationMember2009 - Present
Georgia State BarMember2009 - Present
Supreme Court of GeorgiaMember of the Bar2009 - Present
Newnan Coweta Bar AssociationTreasurer2009 - 2010
Phi Alpha DeltaMember2007 - Present
Atlanta's John Marshall Law JournalEditor2007 - 2009
Legal cases
Case nameOutcome
State of Georgia v. KingNot Guilty
Duncan v. LameeDefendant found to be in contempt.
State v. PanterDismissed
See all legal cases 
School nameMajorDegreeGraduated
Atlanta's John Marshall Law SchoolLawJuris Doctor2009
Charleston Southern UniversityMusicBachelor of Arts2002
Speaking engagements
Conference nameTitleDate
Law School Orientation on ProfessionalismEthics and Professionalism2012
Evidence ClassPracticing in the Real World2012