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John Cannon
Husband, Father, Soldier & Fierce Advocate for Your Rights
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Biography
John is a husband, father, soldier, and dedicated attorney who fights relentlessly for his clients’ rights. As the founder of Cannon & Associates, he combines compassion with unmatched legal skill, guiding clients through criminal defense, family law, and military justice matters with clarity and confidence.
With experience as a former Assistant District Attorney, Assistant Attorney General, and current Judge Advocate in the Oklahoma National Guard, John brings a unique perspective to every case. His deep commitment to keeping clients informed and supported sets him apart — with John, you’ll never face a legal decision without understanding every option ahead.
Practice Areas
- Criminal Law
- Criminal Appeals, Drug Crimes, Expungement, Fraud, Gun Crimes, Internet Crimes, Sex Crimes, Theft, Violent Crimes
- Divorce
- Collaborative Law, Contested Divorce, Military Divorce, Property Division, Same Sex Divorce, Spousal Support & Alimony, Uncontested Divorce
- DUI & DWI
Fees
- Free Consultation
- Credit Cards Accepted
Jurisdictions Admitted to Practice
- Oklahoma
- Oklahoma Bar Association
- ID Number: 30033
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- Western, Eastern, and Northern Districts of Oklahoma
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- 10th Circuit
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Languages
- English: Spoken, Written
Professional Experience
- Owner & Founder
- Cannon & Associates
- - 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.
Education
- Judge Advocate General’s Legal Center and School
- JAG | Military Law
- -
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- Oklahoma City University School of Law
- J.D. (2010)
- -
- Activities: National Trial Team and AAJ Trial Team
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- University of Kansas
- B.A. (2010) | English
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- Activities: Varsity Football lettermen
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Awards
- 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
- Member
- - Current
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- Judge Advocate General's Corps
- Judge Advocate
- - Current
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- Oklahoma Criminal Defense Lawyers Assocation
- Member
- - Current
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- Oklahoma State Bar
- Member
- - Current
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- William J. Holloway American Inn of Court
- Member
- - Current
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Publications
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.
Videos
What can you expect - Cannon & Associates - Family Law
Why I Practice Criminal Law
What's The Child Custody Process in Oklahoma? Answered.
DUI, what do I do?
Legal Answers
16 Questions Answered
- Q. Can I get a court order to establish paternity?
- A: Yes, you’re entitled to an answer to that question and the Court can order the test. You need an attorney to assist you through the process.
- Q. Can my child's dad take him out of state if no legal papers have been signed?
- A: He does not have the authority to take the child out of state. You should mutually or independent initiate a paternity suit in Oklahoma with the assistant of counsel.
- Q. What can my niece do to get her child support that the judge ordered.
- A: She needs to seek enforcement through the court with the assistance of counsel.
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