Attorney Aaron O’Brien

No matter what the circumstances are, Aaron O’Brien will not judge you,
only vigorously represent you.

Attorney Aaron O’Brien

 Aaron O’Brien strives to get to the heart of his clients’ problems
and to reach a fast and fair resolution in all areas of law.

Attorney Aaron O’Brien

Aaron O’Brien has handled cases of virtually all types for all kinds of people,
from all walks of life, right here in Southwest Florida.


Aaron O’Brien vigorously represents people of all kinds in all kinds of predicaments. He has earned a reputation for a tenacious style and success in the courtroom.

Aaron O’Brien has appeared on Closing Arguments with Nancy Grace (mercifully there was a guest host that day), Both Sides with Vinnie Politan, Catherine Crier Live, Trial Heat, Open Court, Daybreak, the News-Press, Bonita Banner, Naples Daily News, Cape Coral Breeze, and more.

You can be sure that no matter what your circumstances are, Aaron O’Brien will not judge you, but zealously represent you and fight for you. He will spend the time necessary to listen to you, to fully understand you, and to achieve the best possible result for you.

In his off time, Aaron O’Brien trains for and competes in triathlons, marathons and other races. He enjoys time with family, boating, fishing, hiking, biking, hunting, music, reading and advocating for limited government, freedom and liberty.




I needed a lawyer, and I found the best! Mr O’Brien is a man of his word. He did exactly what he said he would and when! His counsel was very good. He is an honest and trustworthy man. I highly recommend him.



5 or 6 years I found myself in an unfortunate situation when I was falsely accused of DUI after being pulled over by the FHP. After meeting a couple lawyers and not being satisfied I was recommended Mr. O’Brien. Aaron was honest, straight-forward, aggressive and very receptive to my wants and needs.



We have needed the services of Mr O’Brien three times and each time we have had a positive outcome he gets the results you want and he is always willing to get back in the ring and fight for you. You are an excellent hands with him and his staff is amazing. I would highly recommend him to represent you for just about anything.



Mr. O’Brien was more than professional. I was in a position of getting no where and the potential end result was looking very grim. He listened & also went above and beyond working with all players involved in my case. Mr. O’Brien made me and my family feel as we were his top priority, asking questions then actually listening to my answers.



I couldn’t be happier with the work that Aaron O’Brien did on my behalf. The months that my case was open were extremely stressful for me and my family, but I felt progress with every conversation I had with Mr. O’Brien. The outcome FAR EXCEEDED my expectations.


Areas Of Practice

The O’Brien Law Firm is a general law practice, one-stop shopping for all your legal needs.

No matter what legal issue you face, contact Attorney Aaron O’Brien and see if he can help. With his decades of experience, Mr. O’Brien has handled virtually every type of case. He strives to get to the heart of his clients’ problems and to reach an expedited resolution in all areas of law. If he feels another attorney may be better suited for your particular needs, Mr. O’Brien has a wide range of contacts of skilled lawyers both locally and throughout the State of Florida to which to refer you. Do not hesitate to call us – we’re happy to try to help.

Criminal Defense

If you have been recently arrested or you are being investigated you need a local, experienced, knowledgeable, aggressive and effective criminal defense attorney.

Injunctions and Restraining Orders

Aaron O’Brien represents both Petitioners and Respondents in domestic violence injunctions and restraining orders against stalking and violence.


If you’ve been arrested for DUI, you only have 10 DAYS to take action and you need a local, experienced, knowledgeable, and effective DUI defense attorney. We can help.

Personal Injury

The firm’s personal injury practice is focused on providing clients excellent service, results, and support during some of the most difficult times of their lives.

Wrongful Death

The O’Brien Law Firm has handled wrongful death cases involving car and truck drivers injuring and/or causing the death of bicylcists and motorcyclists.

Student Code of Conduct and Title IX

Attorney Aaron O’Brien serves as a Student Advisor for Florida Gulf Coast University students facing Student Code of Conduct hearings and Title IX investigations.

Traffic Tickets

Even a minor traffic infraction has long-lasting consequences, Attorney Aaron O’Brien routinely represents people accused of violating traffic laws.

Asset Forfeiture

Aaron O’Brien represents people whose cash, cars, boats, and other property has been seized by the government, also known as Civil Asset Forfeiture.

Grievance Defense

Attorney Aaron O’Brien defends attorneys accused in Florida Bar Grievance Defense complaints or disciplinary matters contact The O’Brien Law Firm right away.


Florida Defense Attorney, Aaron O'Brien

Drop the Comb and Put Your Hands Up!

Arrested for Cutting Hair? The Orlando Sentinel reported that armed deputies raided a barbershop on a busy back-to-school weekend.  The barbers were handcuffed in front of customers and arrested. Their crime? Criminal Barbering! Criminal Barbering? ...

Florida Defense Attorney, Aaron O'Brien

Who Needs a Lawyer? I’ll Just Fix This Up Myself!

In our latest installment of the “I’ll just fix this up myself” files, the Fort Myers News-Press, reports yet another man walked into the State Attorney’s Office with his girlfriend who had a restraining order against him. He was arrested shortly thereafter. Here’s...

Lani Kai Beach Resort, Fort Myers Beach, Florida | Attorney Aaron O'Brien

Interview: Fort Myers Lani Kai Balcony Death

Defendant, Christopher Dame, was accused of dropping his wife from a balcony at the Lani Kai beach resort in Fort Myers, FL. Fort Myers criminal defense attorney, Aaron O’Brien, was interviewed on Court TV regarding the case. Ultimately, Aaron successfully defended...

Florida Defense Attorney, Aaron O'Brien

Punitive Damages for Texting and Driving

A Collier County circuit court judge has ruled that the punitive damages can be sought in a case where the driver who ran over and killed a cyclist was alleged to have been texting and driving. Typically, only compensatory damages are permitted. The O’Brien...

Florida Defense Attorney, Aaron O'Brien

Judicial Circuit Court Nominating Commission

In 2019, Attorney Aaron O'Brien was honored to be appointed by Governor Ron DeSantis to serve his third term on the Twentieth Circuit Judicial Nominating Commission (JNC) covering all of Southwest Florida: Lee, Collier,...