Aiken & O'Halloran, Criminal Defense

Proven Winners
In Criminal Defense

Attorney Sean C. O'Halloran

SEAN C. O’Halloran

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Practice Areas

  • Criminal Law


I am a partner and trial attorney with the law firm of Aiken, O'Halloran & Associates. I have lived in Fort Myers since 1973. I graduated high school from Bishop Verot in 1992 and received my undergraduate degree from Florida State University. I graduated from law school in 1999 and was admitted to the Florida Bar in April of 2000.

After being admitted to the Bar, I worked at the State Attorney's Office prosecuting misdemeanor and felony cases for three (3) years. I handled misdemeanor cases in Charlotte County, including misdemeanor DUI's, domestic violence batteries, petit thefts, driver's license offenses and fish and game violations. I tried dozens of cases in Charlotte County and eventually took over the juvenile prosecutor's position before moving to take on felony matters in Fort Myers.

As a felony prosecutor in Fort Myers, I tried dozens of cases including multiple murder trials, firearm related offenses, drug violations, robberies, and aggravated battery allegations.

After gaining trial experience from the State Attorney's Office, my partner and I established the law firm of Aiken, O'Halloran & Associates early in 2004. Our law firm represents people charged with all types of State and Federal criminal offenses. We are trial attorneys with the experience to defend people arrested in Collier, Lee and Charlotte Counties.

In addition to our trial experience, our office focuses on thoroughly investigating your cases in an effort to defend you. Regularly, we use and investigator to take statements on our client's behalf, question witnesses involved in an arrest and collect evidence to support appropriate defenses. Often this results in our office having an opportunity to present our client's defenses to a Prosecutor prior to a filing decision being made by the State Attorney's Office. In this way, we are able to resolve many cases without charges being filed, or negotiate a resolution to a reduced charge for a more reasonable sentence.


  • Florida Coastal School of Law, Jacksonville, Florida
    • J.D.
  • Florida State University, Tallahassee, FL
    • B.A. - 1996
    • Major: Communication Management
    • Major: Business Management

Past Positions

  • State Atty. Office, Lee County, Assistant State Attorney, 2000 to 2002
  • State Atty. Office, Charlotte County, Assistant State Attorney, 2002 to 2003

Professional Associations

  • Florida Association Criminal Defense Lawyers, Member, 2006 to 2008

Bar Admissions

  • Florida, 2000
  • U.S. District Court Middle District of Florida, 2005