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One of Oklahoma’s premier criminal defense trial attorneys. Corey's professionalism reflects his passion for criminal law and courtroom advocacy. Mr. Brennan’s diligent preparation and experience dealing with prosecutors and judges from all over the state of Oklahoma enable him to effectively defend his clients’ Constitutional rights in both negotiation and courtroom litigation.
Mr. Brennan started his legal career at the Oklahoma City University (OCU) School of Law, where he established himself as a hard-working and dedicated student. His desire to become a trial attorney and his willingness to sacrifice earned him a Limited License to practice law while still attending school as a full-time student.
While in law school, he was selected as a National Member of the Order of Barristers for his excellence in trial practice, and he was awarded the Cali Award for earning top honors in the study of Trial Practice. In addition, Mr. Brennan competed in the American College of Trial Lawyers (ACTL) National Trial competition and was a member of the OCU Law Moot Court Society.
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Chat withState: Oklahoma
Acquired: 2015
No misconduct found
625 NW 13th St. Ste A, Oklahoma City, OK, 73103
38 Client Reviews
Showing 1 - 5 of 24 reviews | Case Results
Posted by Miller | July 17, 2025 | Hired Attorney | Criminal Defense
OUTSTANDING ATTORNEY
A fearless fighter that has your back 1000%. Hiring Corey Brennan as a defense attorney ws the best decision I've ever made. He is the BEST attorney in the state. You want an attorney who is confident, thorough, and unshakably composed. He didn't just know the law -he knew how to communicate it cle...
Posted by Wade | March 06, 2025 | Hired Attorney | Criminal Defense
Great attourney
I cannot express enough how grateful I am for the exceptional legal representation provided by Mr. Brennan. From our initial consultation, it was clear that I was in the hands of a true expert in criminal defense. He demonstrated an impressive understanding of the law and took the time to thoroughly ...
Posted by Jasmine | March 03, 2024 | Hired Attorney | Personal Injury
Wonderful lawyer
I hired Corey Brennan a year ago. I was injured in a car accident and I needed to sue the driver. I taught it would have been a tough case but Mr. Brennan did his ultimate best to make sure I get compensated for the incident. I can’t thank him enough for his hard work and I definitely recommend him. ...
Posted by Brad | September 03, 2021 | Hired Attorney
One of the best in Oklahoma
Straightforward, knowledgeable, and experienced. He explained in detail what he could happen and what to expect. Things went exactly like he expected them to and always kept me informed. He was 100% worth my time, trust, and money.
Posted by Mike | January 20, 2020 | Hired Attorney | Criminal Defense
Wonderful Attorney; would recommend in a heartbeat.
Our son was in a terrible situation facing 2 decades in prison. WE needed someone to fight for him. Corey believed in our son and without him, I don't believe the outcome would have been as positive, let alone, having potential reunification with family within grasp. Parents always want to do what'...
"Corey is a tough attorney who will vigorously fight for his clients. I have worked with him on multiple occasions, and there are few attorneys that have Corey's passion and work ethic."
Criminal defense lawyer
2015
JD - Juris Doctor
English