Free Consultation
$0 first 30 minutes
PRO
also known as James Tanner Duncan
Virtual Consultation Available
Free Consultation
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.
2
Practice Areas
Free Consultation
$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 6 - 10 of 24 reviews | Lawsuits & Disputes
Posted by Treyshawn | April 03, 2025 | Hired Attorney | Lawsuits & Disputes
Tanner will give you the best defense
Great work ethic professional and clear and concise approach to my needs during my case honest and transparent with the me and my options definitely would recommend to anyone in need of counsel.
Posted by Candace | February 07, 2025 | Hired Attorney | Lawsuits & Disputes
Power House Attorney
There’s really not enough words to say or explain how excellent Tanner did with the case I retained him for. He came through like a thief in the night and stole all the worries and stress away!! When there was no hope, he made a way and I can’t thank you Tanner! I pray nothing but blessings to you in...
Posted by Bradley | December 10, 2024 | Hired Attorney | Lawsuits & Disputes
An amazing lawyer!
I hired Tanner to help me with my first and only case. He did a terrific job, He explained every detail and made everything easy to understand, He makes sure you know all the steps and actions to take, Very communicative, He is extremely knowledgeable in his profession, great pricing, he was calm, g...
Posted by Rick | September 09, 2024 | Hired Attorney | Lawsuits & Disputes
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 Brett | August 15, 2024 | Hired Attorney | Lawsuits & Disputes
Great Attorney/Lawyer
Great services, very friendly and knowledgeable, got my case took care of fast and affordable. Would definitely recommend to other people.
"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