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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
9078 Union Centre Blvd. Suite 350, West Chester, OH, 45069
rittgers.com/106 Client Reviews
Showing 86 - 90 of 106 reviews
Posted by Dan | March 07, 2023
Pleasure to Work With
Sat down with Tanner and he was amazing to work with. Took the time to sit with me as a walk in even though he was getting ready to leave for trial. Was very knowledgeable about the situation and very responsive in all communication after our initial sit down. Highly recommend.
Posted by anonymous | February 03, 2023 | Hired Attorney
Great Results
I hired Mr. Duncan for a specific reason, and he handled my case with great knowledge, nonjudgemental attitude and quickness. I live out of State, so not having to be present was greatly appreciated.
Posted by Jill | February 02, 2023 | Hired Attorney
Expungement
Tanner made this process simple for me, everything was done quickly and professionally. I can now put that part of my life behind me and for that I am extremely grateful.
Posted by Jared | January 31, 2023 | Hired Attorney
Amazing service
Tanner was extremely professional and attentive throughout the entire process, he helped guide me through and set the right expectations. I was very fortunate I got such a great person to represent me in my time of need.
Posted by Brian | January 07, 2023 | Hired Attorney
Excellent lawyer and person
Tanner Is an excellent lawyer that does what he says he will do and is very knowledgeable of the law. He helped me with my case with professionalism and pride in what he does. I would definitely recommend Tanner and Suhre and Associates with any criminal defense issues again as they were able to get ...
"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