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Tanner Duncan
also known as James Tanner Duncan
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About Tanner
Biography
J. Tanner Duncan is a Cincinnati-born criminal defense attorney who takes the fight head-on—and doesn’t back down. Practicing in both Ohio and Kentucky, he handles everything from life-altering felony charges to misdemeanors and traffic offenses, bringing the same aggressive, results-driven approach to every case.
From investigation through trial, Tanner is strategic, relentless, and built for high-stakes defense. He has handled cases involving murder, shootings, sex crimes, DUI/OVIs, domestic violence, and more—where the consequences can follow a client for life. He prepares every case for trial, challenges every piece of evidence, and forces the prosecution to prove its case.
Tanner thrives in the courtroom while others avoid it. He makes sure clients understand exactly what’s at risk—whether it’s jail time, permanent records, registration requirements, license suspensions, or firearm restrictions—and builds a defense designed to protect their future.
Licensed in both Ohio and Kentucky, Tanner is uniquely positioned to handle cases with cross-state consequences, including probation, parole, and license issues. His approach is simple: take control early, apply pressure, and fight relentlessly to win.
When Your Freedom or Future Is on the Line—We Fight to Win.
Practice Areas
2
Practice Areas
Criminal Defense
50%
Personal Injury
50%
Fees and Rates
Cost
Payment Methods
- Cash
- Check
- Credit Card
Awards
2026 2025 2024
...
+
2
Licenses
Licensed in Kentucky for 4 years
State: Kentucky
Acquired: 2021
No misconduct found
Licensed in Ohio for 6 years
State: Ohio
Acquired: 2019
No misconduct found
Location
Rittgers Rittgers & Nakajima
12 E. Warren Street, Lebanon, OH, 45036
Rittgers Rittgers & Nakajima
3734 Eastern Avenue, Cincinnati, OH, 45226
Rittgers Rittgers & Nakajima
121 West High Street, Oxford, OH, 45056
Rittgers Rittgers & Nakajima
9078 Union Centre Blvd. Suite 350, West Chester, OH, 45069
Rittgers Rittgers & Nakajima
401 Scott St., Covington, KY, 41011
Rittgers Rittgers & Nakajima
4555 Lake Forest Drive Suite 650, Cincinnati, OH, 45242
Rittgers Rittgers & Nakajima
3805 Edwards Road Suite 550, Cincinnati, OH, 45209
Tanner Duncan's Reviews
Avvo Review Score
103 Client Reviews
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Practice Areas
What Clients Mention
Showing 1 - 5 of 21 reviews | Professionalism
Posted by anonymous | March 09, 2026 | Hired Attorney
Charges Dismissed and Peace of Mind Restored
I’m extremely grateful for the outstanding representation provided by Tanner Duncan in my BUI case. Thanks to his deep knowledge of the law and strategic approach, the original charges were dismissed, and what could have been a misdemeanor was reduced to minor infractions. He was professional, respon...
Posted by Gill | October 27, 2025 | Hired Attorney | Criminal Defense
HOME RUN!!!
I called Tanner with a problem and he fixed it!!! No funny business, no plea deals, no back and forth, he just fixed the problem with a full dismissal!! If you want results, Tanner Duncan is the man that can get them!!!
Posted by anonymous | April 02, 2025 | Hired Attorney
Hiring Tanner was the best decision I could have made!
Wow, Tanner sets THE extremely high new standard for all attorney interactions I might have in the future. He is incredibly communicative, thorough, and professional. He answered or called back right away any time I called with questions, and gave me balanced and accurate advice. I felt both confide...
Posted by Marylynn | December 13, 2024 | Hired Attorney
5 star
Very professional and was very helpful having Tanners assistance and guidance through a difficult situation. His expertise and approach made the whole thing bearable. Highly recommended. .
Posted by anonymous | November 02, 2024 | Hired Attorney | Criminal Defense
Moving violation dismissed!
Very effective and efficiently handled knew some of the prosecutors as well there for they worked with us and got the case dismissed thanks Tanner!
Tanner Duncan's Lawyer Endorsements
"I endorse this lawyer. Tanner is smart, talented, hard-working, and kind. I appreciate his vigorous representation of his clients."
"Tanner is a fantastic criminal defense attorney. He is hardworking and dedicated to getting his clients the best outcome. He is well known in most courts in the Greater Cincinnati area and that reputation carries over to his interactions with judges and prosecutors. Would highly recommend."
"Tanner is a bright, motivated, and aggressive lawyer. He cares deeply about his clients and works tirelessly to get the best result possible. I endorse Tanner without reservation."
"Not only does Tanner have the intelligence and experience to aggressively represent his clients at the highest level, he genuinely cares about his clients and the outcome they receive. I would stand next to Mr. Duncan in any type of criminal matter with confidence."
Aaron Levinson
Criminal defense lawyer
Experience
Honors
2019
Cum Laude, Northern Kentucky University - Salmon P. Chase College of Law
2019
Dean's List, Northern Kentucky University - Salmon P. Chase College of Law
2019
Order of the Barristers, Northern Kentucky University - Salmon P. Chase College of Law
2019
Law Review - Associate Editor, Northern Kentucky University - Salmon P. Chase College of Law
2018
Dean's List, Northern Kentucky University - Salmon P. Chase College of Law
2018
Law Review - Associate Editor, Northern Kentucky University - Salmon P. Chase College of Law
2017
Dean's List, Northern Kentucky University - Salmon P. Chase College of Law
2016
Dean's List, Northern Kentucky University - Salmon P. Chase College of Law
Work Experience
2025 - Present
Trial Attorney, Rittgers & Rittgers
2021 - 2025
Trial Attorney, Suhre & Associates, LLC
Associations
Northern Kentucky Bar Association
Ohio State Bar Association
Kentucky Bar Association
Education
2019
Northern Kentucky University - Salmon P. Chase College of Law
JD - Juris Doctor
2014
University of Cincinnati
BS - Bachelor of Science (History)
Speaking Engagements
2024
The Lawyers' Club of Cincinnati
FBI NICS Appeals
2024
Legal Methods - Guest Speaker
Criminal Defense Practice
Languages
English