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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 1 - 5 of 8 reviews | Practice Area Knowledge
Posted by Kindra | May 04, 2026 | Hired Attorney | Expungement
Amazing Law Firm
Tanner made my expungement process so easy. He was recommended to be through an attorney in Indiana. Communication was amazing. Jennifer Kell did an amazing job answering questions I had! Highly recommended!
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 anonymous | November 15, 2023 | Hired Attorney | Criminal Defense
A Wonderful Ally
A perfect storm of events led me to having my worst moment play out publicly. Law enforcement became involved and in that minute- my life was turned upside down. Despite a completely clean background, a loving and stable home life, and a successful career- my freedom was taken away from me in vario...
Posted by anonymous | October 15, 2023 | Hired Attorney | Immigration
Excellent Service
Having to go to court for the first time was a scary and emotionally draining experience. However, with Attorney Tanner Duncan, we navigated all the obstacles and landed on a favorable decision which had no impact on our immigration application. Attorney Duncan was not only very attentive to detai...
Posted by anonymous | April 25, 2023 | Hired Attorney | Criminal Defense
Extremely satisfied
While searching for a criminal defense lawyer we came across Mr. Duncan and his law firm. We did some research and are extremely pleased that we have chosen Mr. Duncan to defend my fiancé. He immediately responded to our inquiry and gave us a reasonable quote. He asked a lot of questions to get a ...
"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