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John J. Mannion Jr.

Criminal defense Attorney at Sanford, FL

5.0   1 review

also known as Jack Mannion

  • Licensed for 20 years
    State FL
    Acquired 2003
    Member in Good Standing No misconduct found

We have not found any instances of professional misconduct for this lawyer.

About John

Learn John’s areas of practice.

Attorney John Mannion is a Board Certified Criminal Trial Attorney. Evaluated for Professionalism and Tested for Expertise.

Jack, as he is known to his friends and collegues, is a native Floridian who grew up in South Florida. He graduated from Florida State and received an MBA from Florida International before accepting a position with The Coca-Cola Company in Atlanta. While working full time as a project manager, Jack attended Georgia State Law School at night. When he graduated he returned home to Florida.

Jack is a former Seminole County Prosecutor having been appointed by the late Norman R. Wolfinger in 2003. In 2011 he earned the Pride in Excellence Attorney of the Year award for Seminole County from the State Attorney's Office. While he was with the State Attorney's Office he tried over 50 cases including homicides, child abuse, and domestic violence. In 2016 he left the State Attorney's Office to open his own law firm.


Mannion Law LLC
520 W. Lake Mary Blvd.
Suite 103
Sanford, FL, 32773

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5.0 / 5.0
  1 customer review
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1 Star
Posted by Jocelyn | July 11, 2016
This review is from a person who hired this attorney.
| Hired Attorney
Great family lawyer
Jack has managed our family trust for years and has been a very dependable advocate. His filings are always timely and he answers questions in a very thorough way. He's even advised us on unrelated matters when requested. I highly recommend him for whatever services you might require.


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AVVO RATING 7.4 (Very Good)

Work Experience

  • Attorney at-Law
  • Mannion Law LLC
  • 2016 - Present
  • Assistant State Attorney
  • State Attorney's Office
  • 2003 - 2016


  • Georgia State University College of Law
  • JD - Juris Doctor
  • 2001
  • Florida International University
  • MA - Masters
  • 1990
  • Florida State University
  • BS - Bachelor of Science
  • 1984


  • National Association of Criminal Defense Attorneys
  • 2016 - Present
  • Seminole County Bar Association
  • 2004 - Present
  • Volie A. Williams American Inn of Court
  • 2004 - Present
  • Florida Prosecuting Attorneys Association
  • 2004 - 2016
View all associations

Honors and Awards

  • Pride in Excellence Attorney of the Year
  • State Attorney, 18th Circuit, Fla.
  • 2011

Attorney endorsements

Received (3)
Given (6)
Endorse John
Criminal defense Attorney | Aug 18
Relationship: Fellow lawyer in community
"I highly endorse and recommend John “Jack” Mannion as a criminal defense lawyer. I have practiced in the same county as Jack for many years, and have been very impressed with his work. He was a prosecutor for the state and he now brings that knowledge to the defense table as a criminal defense lawyer. He is highly skilled and I think he is the "go to" lawyer for criminal defense. He is a hard working attorney that will protect your rights."
Criminal defense Attorney | Jul 26
Relationship: Fellow lawyer in community
"Jack Mannion is the type of lawyer that other lawyers seek out for advice in the area of criminal defense law. His experience has been sharpened by over a decade as a prosecutor. He now brings that deep knowledge to clients that need a great criminal defense lawyer. Jack is a long-time member of the Seminole County Bar Association and is seen by his legal peers as a leader. If you want a lawyer that knows the law and will fight for you in court, Jack is your man."
Criminal defense Attorney | Jul 08
Relationship: Fellow lawyer in community
"John Mannion has a passion for justice. He's a straight shooter who doesn't mess around and will make sure you are treated fairly."
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