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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
9078 Union Centre Blvd. Suite 350, West Chester, OH, 45069
rittgers.com/106 Client Reviews
Showing 26 - 30 of 46 reviews | Advocacy
Posted by Ted | April 15, 2024
Incredible helpful
Not only did Taylor communicate everything he needed from me, he handled everything quickly, and was sure to let me know what going on during every step. He is just very easy to work with and put in a LOT of effort to get me the best outcome. Charges are being entirely dismissed just as long as I don...
Posted by Tim | March 21, 2024 | Hired Attorney
Mr. Duncan was fantastic.
As this was my first time run in with the law, I had zero idea of what to expect. Mr. Duncan expertly walked me through all of the details and avenues of defense that were available. As a result, I was confident that I got the best outcome possible.
Posted by William | March 21, 2024 | Hired Attorney
THE BEST!!
Tanner kept me from being incarcerated. If you want the best of the best here’s your guy. He made a impossible possible for me. He will fight for you when no one’s looking. Get Tanner get the best results.
Posted by anonymous | February 19, 2024 | Hired Attorney
Great Attorney
He defended me well in my case and goes the extra mile. He answered all my questions.
Posted by jada | February 07, 2024 | Hired Attorney
Highly Skilled Attorney
Tanner was so on top of everything with my case from the moment i stepped into his office. Extremely professional and truly does his best to make you understand what’s going on. And will do absolutely anything he can to get the resolution in your favor! Absolutely loved working with Mr. Duncan and Su...
"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