About Attorney Corey Brennan

Corey Brennan is a trial attorney from Oklahoma City, Oklahoma, and has proven himself to be one of the state’s most formidable criminal defense trial attorneys. Known for his skill in the courtroom, his strategic approach to complex criminal cases, and his relentless advocacy for his clients, Mr. Brennan has built a strong reputation across Oklahoma as an attorney who fights to win.

Mr. Brennan focuses his practice exclusively on criminal defense, representing clients in misdemeanor and felony cases throughout Oklahoma. Whether defending someone against a DUI, drug offense, or serious violent felony, he is committed to protecting his clients’ rights, freedom, and future.

Education and Background

Corey earned his Juris Doctor from the Oklahoma City University School of Law, where he distinguished himself as one of the top trial advocates in his class. During law school, he was:

Selected as a National Member of the Order of Barristers for excellence in trial advocacy
Awarded the CALI Award for earning top honors in Trial Practice
A competitor in the American College of Trial Lawyers (ACTL) National Trial Competition
A member of the OCU Law Moot Court Society
One of a limited number of students to receive a limited license to practice law while still in law school

After graduating, Mr. Brennan passed the Oklahoma Bar Exam on his first attempt. Since that time, he has successfully represented individuals in a wide range of criminal matters, including major felony jury trials. His combination of academic excellence, courtroom experience, and deep knowledge of Oklahoma law has made him a trusted advocate for clients across the state.

Corey Brennan in the News

DA dismisses charges against Edmond mother while broken leg lawsuit lingers

Criminal Defense Experience

Corey has defended clients against an extensive range of charges, including but not limited to:

Drug crimes – Proceeds, Possession CDS, Trafficking, Intent to Distribute
Assault & Battery – Aggravated, Domestic, Strangulation
Burglary
Sex Crimes – Child Sexual Abuse, Lewd Acts, Child Porn, Rape, Prostitution
Firearms Offenses
Driving Under the Influence (DUI) / DWI / APC
Kidnapping
Larceny/Theft Offenses – Larceny, Knowingly Concealing Stolen Property
Homicide – Manslaughter, Murder
Computer Crimes
Victim Protective Orders (VPOs)

Trial Philosophy and Approach

Mr. Brennan believes that preparation and persistence win cases. He approaches each case as if it will go to trial, carefully examining every piece of evidence, identifying constitutional violations, and challenging illegal searches and arrests.

Whether he is arguing motions to suppress unlawfully obtained evidence, cross-examining witnesses, or persuading a jury to acquit his client, Mr. Brennan’s commitment to excellence and justice never wavers. His clients benefit from his unwavering focus, trial skill, and passion for protecting their rights.

Since beginning his practice, Mr. Brennan has consistently proven himself as one of Oklahoma’s most aggressive and effective criminal defense attorneys. His dedication to his craft and desire to win have earned his clients exceptional results and the respect of judges, peers, and opposing counsel alike.

Client Commitment

Corey treats every client with respect and honesty. He provides straightforward legal guidance, keeps clients informed at every stage, and fights tirelessly to achieve the best possible outcome in every case—no matter how serious the charge.

When you hire Corey Brennan, you gain more than an attorney—you gain a relentless advocate who will stand beside you every step of the way.