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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
Free Consultation
$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 41 - 45 of 46 reviews | Advocacy
Posted by Yanni Korakis | December 06, 2022 | Hired Attorney
local legend
I got charged with minor in possession of alcohol. This man proceeded to take of everything for me and went above and beyond to make I get this charge off. He talked to the diversion officers for me, made sure I stayed on top of my diversion program and when I missed court on accident he made sure I...
Posted by anonymous | December 06, 2022 | Hired Attorney
Professional, understanding, and expeditious.
Tanner listened to my legal concerns, explained how he could assist me, and resolved my case in less than a month. I didn't lose time from my career or my personal life because Tanner and his team effectively communicated with me handled everything. I didn't even have to appear in court. I truly ap...
Posted by Phurba | October 20, 2022 | Hired Attorney
Great
One of best lawyer i ever got thanks for everything you did to help me. I would like to haired hi
Posted by Rose | May 17, 2022 | Hired Attorney
Expungement
I have been wanting to get my record expunged for a long time now. I contacted Tanner Duncan and he walked me through what needed to be done. I got record from 23 yrs ago finally off my past record and I do not have to worry about applying for a job or moving up in the company now. Great young man a...
Posted by anonymous | May 12, 2022 | Hired Attorney
Amazing Service!!! Amazing Results!!!
All I can really say is amazing overall!!! I came to Mr. Duncan to expunge an incident which has been hanging over my head for nearly 2 decades. It's affected my professional life but more fundamentally this conviction has affected my self worth and how I view myself. But Mr. Tanner and his team were...
"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