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Derek James Byrne graduated from the Stetson University College of Law in 2010, where he enjoyed a thorough training in trial advocacy. Those skills were further developed and refined over the years he spent litigating in the Tampa Bay area, including car accident, marital/family law, commercial litigation, general personal injury, probate litigation, and real estate law.

In 2015, Derek fulfilled a lifetime dream when he established his first law office as a solo practitioner. In 2018, he joined forces with Andrew Mallory to form Byrne Mallory, PLLC, a general practice law firm.

Derek’s litigation experience includes high stakes wrongful death, traumatic brain injury, automobile accident, intellectual property, collection, and complex family law cases.

He is proud to be one of the few attorneys in our region who have developed a successful general practice helping clients in Pinellas County, Florida. This diverse experience allows Derek to find creative and efficient solutions for his clients.


Stetson University College of Law, J.D.


Florida Trial Lawyer Section of the Florida Bar


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