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PRO
also known as James Tanner Duncan
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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.
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Practice Areas
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State: Kentucky
Acquired: 2021
No misconduct found
State: Ohio
Acquired: 2019
No misconduct found
12 E. Warren Street, Lebanon, OH, 45036
3734 Eastern Avenue, Cincinnati, OH, 45226
121 West High Street, Oxford, OH, 45056
9078 Union Centre Blvd. Suite 350, West Chester, OH, 45069
401 Scott St., Covington, KY, 41011
4555 Lake Forest Drive Suite 650, Cincinnati, OH, 45242
3805 Edwards Road Suite 550, Cincinnati, OH, 45209
102 Client Reviews
Showing 6 - 10 of 102 reviews
Posted by Jim | March 12, 2026 | Hired Attorney
Exceptional attorney
Very thankful for having hired Tanner. He was very professional, knowledgeable, and approachable. Anytime we had a question we could text or email him. He was definitely a blessing.
Posted by anonymous | March 11, 2026 | Hired Attorney | Criminal Defense
Professional, Honest, and Got the Best Outcome Possible
I can’t thank Tanner Duncan enough for everything he did for me. From the beginning he was professional, honest, and really took the time to explain every step of the process so I knew exactly what to expect. Court situations can be extremely stressful, but he handled my case with confidence and expe...
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 Bryan | January 05, 2026 | Hired Attorney | DUI & DWI
Professional and Attentive
I hired Tanner Duncan to represent me in a DUI case, and I had a very positive experience. From the beginning, he was professional, straightforward about the process and possible outcomes. He consistently communicated clearly and made sure I understood each step of my case. I appreciated how responsi...
Posted by Douglas | December 29, 2025 | Hired Attorney
Professional, thorough and responsive
Tanner helped my family tremendously. His professionalism, thoroughness and responsiveness were top notch. We undoubtedly made the correct decision and couldn’t recommend Tanner more.
"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."
Criminal defense lawyer
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
2025 - Present
Trial Attorney, Rittgers & Rittgers
2021 - 2025
Trial Attorney, Suhre & Associates, LLC
2019
JD - Juris Doctor
2014
BS - Bachelor of Science (History)
2024
2024
Criminal Defense Practice
English