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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
103 Client Reviews
Showing 31 - 35 of 103 reviews
Posted by Bradley | December 10, 2024 | Hired Attorney | Lawsuits & Disputes
An amazing lawyer!
I hired Tanner to help me with my first and only case. He did a terrific job, He explained every detail and made everything easy to understand, He makes sure you know all the steps and actions to take, Very communicative, He is extremely knowledgeable in his profession, great pricing, he was calm, g...
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!
Posted by Aneshia | October 04, 2024 | Hired Attorney
Excellent attorney
Considering the circumstances, “I had a fantastic experience with Tanner Duncan as my attorney. He was incredibly honest, accessible, trustworthy, and kept me informed throughout the entire process. The money I spent on his services was absolutely worth it. Highly recommend!”
Posted by Rick | September 09, 2024 | Hired Attorney | Lawsuits & Disputes
Highly Recommend Tanner and his Team
Tanner and his team were hired in March 2023 and worked on one of family member's case for 18 months. It was a challenging case that faced significant consequences. Tanner worked diligently to ensure my family member's best interests were a priority. The most concerning and stressful part of the e...
Posted by Josh | September 05, 2024 | Hired Attorney | Criminal Defense
Good Guy
He did a wonderful job, I was apprehensive because the state didn't want to work out a deal, but after going to court he convinced the judge into a better sentence than I expected.
"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