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John Cannon

John Cannon

Cannon Law Firm, PLLC
  • Criminal Law, Divorce, DUI & DWI...
  • Oklahoma, Western, Eastern, and Northern Districts of Oklahoma
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Cannon Law Firm, PLLC, is a leading criminal defense and family law firm in Oklahoma City founded by Judge Advocate and former Assistant Attorney General, John P. Cannon. Cannon Law Firm, PLLC, provides experienced legal representation in criminal defense as well as family law matters, including divorce and child custody. I work for clients and their families across Oklahoma.
You need professional legal counsel, if you have been arrested or need a family attorney. Your rights are at stake, you need to speak to an experienced attorney today. Cannon Law Firm, PLLC, is dedicated to helping individual clients and their families through difficult times in life. Each case is unique and I have extensive experience with complex and straightforward cases. I am a trial attorney, an advocate, and I will Fight for your Rights.

Judge Advocate General’s Legal Center and School
JAG | Military Law
Oklahoma City University School of Law
J.D. (2010)
Activities: National Trial Team and AAJ Trial Team
University of Kansas
B.A. (2010) | English
Activities: Varsity Football lettermen
Professional Experience
Cannon Law Firm, PLLC
- Current
Judge Advocate
Judge Advocate General's Corps
- Current
Assistant Attorney General
Oklahoma Attorney General's Office
Litigation Division attorney handling complex torts and employment law cases for a variety of state agencies and department heads in state and federal court.
Assistant Public Defender
Oklahoma County Public Defender's Office
Handled all aspects of a felony docket, including jury trials, motion practice, investigations, and negotiation.
Assistant District Attorney
Garfield County District Attorney's Office
Handled all aspects of felony prosecution from assisting in coordination of investigations through jury trial.
Articles & Publications
Investigative Detention, the Warrantless Seizure of Citizens
Oklahoma Bar Journal
Baxter a 'Warranted New Frontier"
Oklahoma Bar Journal
Speaking Engagements
A Night with the Justices: A Few Good Men, Oklahoma History Center
Oklahoma Supreme Court
Legal analysis of the movie A Few Good Men through the lens of the Uniform Code of Military Justice and other applicable military law.
Rising Star
Super Lawyers
40 Under 40
National Trial Lawyers Association
Recognition as top 40 under 40 in criminal defense
Professional Associations
10th Circuit Bar Association
- Current
Judge Advocate General's Corps
Judge Advocate
- Current
Oklahoma Criminal Defense Lawyers Assocation
- Current
Oklahoma State Bar
- Current
William J. Holloway American Inn of Court
- Current
Jurisdictions Admitted to Practice
Western, Eastern, and Northern Districts of Oklahoma
10th Circuit
  • Free Consultation
  • Credit Cards Accepted
Practice Areas
  • Criminal Law
  • Divorce
  • DUI & DWI
  • Military Law
  • English: Spoken, Written
Social Media
Websites & Blogs
Cannon Law Firm website
Contact & Map
600 West Sheridan
Oklahoma City, OK 73102
Telephone: (405) 888-7369