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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
9078 Union Centre Blvd. Suite 350, West Chester, OH, 45069
rittgers.com/105 Client Reviews
Showing 36 - 40 of 105 reviews
Posted by Rick | September 09, 2024 | Hired Attorney
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
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.
Posted by Gil | August 22, 2024 | Hired Attorney
Exspungements
Communication very good. All issued taken care of in good time. I recommend this firm for any legal issues they practice.
Posted by Brett | August 15, 2024 | Hired Attorney
Great Attorney/Lawyer
Great services, very friendly and knowledgeable, got my case took care of fast and affordable. Would definitely recommend to other people.
Posted by Drew Hinners | August 13, 2024 | Hired Attorney
Tanner goes above and beyond!
After the worst experience in my life, Tanner came through and really helped me put the pieces back together. Tanner stepped out of court to take my initial call when I was getting nothing but other attorney's voicemails. They prepared me and my family for the road ahead and got us the absolute b...
"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