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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/102 Client Reviews
Showing 1 - 5 of 102 reviews
Posted by Janson | April 22, 2026 | Hired Attorney | Lawsuits & Disputes
Tanner Duncan
Tanner Duncan was amazing representing me got my case cleared up quickly and got a better outcome than I was hoping for. Very thankful he represented me
Posted by Jillian | April 08, 2026 | Hired Attorney | Lawsuits & Disputes
An Attorney you want on your side!
Tanner Duncan has been a life savor in my son’s case. We had a strange situation and he jumped in and saved the day. We just moved to Ohio and got hit with a sibling disaster on Christmas Day. He assured us that he would help us every step of the way and that he did! Without him we would have been lo...
Posted by Luke | April 06, 2026 | Hired Attorney
Tanner Duncan was definitely the man for the job
Tanner was informative and present for me throughout my entire legal process. Despite stress over my ordeal, his knowledge and punctuality kept me at ease. I highly recommend Tanner for anyone in need.
Posted by Darrell | April 03, 2026 | Hired Attorney
Great Experience
Tanner Duncan was great! The results were very satisfactory. Would hire him again.
Posted by anonymous | March 31, 2026 | Hired Attorney | Lawsuits & Disputes
Excellent lawyer
Tanner was very thorough and clear in speaking to me about the different options and scenarios in my case. Ultimately he got me my desired outcome and was quick to communicate about follow up questions after the fact.
"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