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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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$0 first 30 minutes
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
104 Client Reviews
Showing 16 - 20 of 30 reviews | Recommendation
Posted by Tony | December 05, 2023
Great Defense Attorney!
Tanner was great to work with, and would definitely hire again. Many thanks to Tanner and Suhre for all that they have done and continue to do!
Posted by Dan | November 18, 2023
Tanner Duncan Review
If you're seeking a legal representative who is honest, pragmatic, responsive, and will be thorough and thoughtful throughout the process, I highly recommend Tanner Duncan. His professionalism, expertise, and dedication in helping me achieve the best possible outcome was evident during my experience ...
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 DLasonia | July 20, 2023 | Hired Attorney | Lawsuits & Disputes
Excellent Attorney
Tanner is an excellent attorney! He handled my case very well, efficiently and with the utmost care and attention. He kept me informed throughout the entire process and was excellent to work with. He was patient in answering all of my questions and concerns and was very diligent and focused throu...
"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