Jonathan Cannon

Hon. Jonathan H. Cannon (Ret.)

JAMS Mediator, Arbitrator, Referee/Special Master, Judge Pro Tem

Case Manager
Lisa Abrantes
T: 619-237-0801
F: 619-236-9032
5 Park Plaza, Suite 400, Irvine, CA 92614

Jonathan H. Cannon is available to conduct cases virtually. JAMS is equipped to provide virtual ADR services on a variety of online platforms, including Zoom, Microsoft Teams, WebEx, and more.


Hon. Jonathan H. Cannon (Ret.) is highly regarded among counsel for his ability to resolve business-related disputes. Having spent two decades on the bench, following 14 years as a litigator in private practice, he is able to quickly drill down on key legal issues that, when resolved, can lead to resolution of the entire case. Judge Cannon is also known for being a fair and impartial arbitrator who is especially adept at handling even the most complex matters.

Judge Cannon, a former accountant and mayor, has unique expertise in dealing with financial and public agency issues that can arise in business and commercial matters.

Representative Matters

  • Accounting mediation, which included fraud claim, involving case filed against packaging company
  • Arbitration involving accounting of sums charged for design work performed at residence 
  • Arbitrator on breach of settlement agreement claims between two construction material companies 
  • Breach of contract dispute involving insurance carrier 
  • Breach of oral contract dispute involving nutritional supplement packaging and distribution company 
  • Breach of warranty mediation involving sewer drain defect 
  • Collection arbitration arising out of breach of billing service agreement for medical practice 
  • Contract dispute mediation between investors 
  • Dispute alleging unfair business practices at fast food restaurant 
  • Extensive experience arbitrating legal fee collection matters 
  • Mediated 20 related breach of contract disputes involving major retailer 
  • Mediation involving breach of contract and negligence claims over defendants’ construction and sale of residence 
  • Mediator for breach of contract dispute between livestock company and beef supplier 
  • Mediator on collection dispute between engineering company and architectural firm over construction of school. Matter included cross-complaint for engineering malpractice. 
  • Presided as arbitrator over dispute involving claims for violations of California’s unfair competition and Finance Lenders laws 
  • Resolved breach of contract and negligence claims arising out of family trust 
  • Shareholder dispute mediation involving details of new operating agreement and compensation
Completed Virtual ADR training conducted by the JAMS Institute, the training arm of JAMS. 

  • California Judges Association, 1987-present
  • Member, Los Angeles County Bar Association, Long Beach Bar Association, Orange County Trial Lawyers Association
  • Past President, Orange County Division of the California League of Cities

ADR Profile

  • Judge, Superior Court, Orange County, 1989-2007
    • Supervising Judge, Family Law Court, four years
    • Member, Complex Civil Panel, five years
  • Judge, Municipal Court, West Orange County Judicial District, 1987-1989
  • Mayor, Garden Grove, 1980-1987
  • Vice Chairman, Garden Grove Redevelopment Agency, 1978-1987
  • City Councilman, City of Garden Grove, 1978-1980
  • Partner, Grisham & Cannon, Orange, CA, 1982-1987
  • Partner, Grisham, Vandenburg, Nott, Conway & Cannon, Long Beach, CA, 1975-1982
    • Associate, Grisham, Vandenburg, Nott & Conway, 1973-1975
  • Deputy City Prosecutor, Long Beach, CA, 1971-1973
  • J.D., Southwestern University School of Law, Los Angeles, CA

Counsel Comments

    • “It was like a business partnership splitting up. He exhibited a real ability to get to some of the factual and legal issues pretty quickly. In pretty quick order, he was able to size up the real needs and desires [of the couple] maybe better than they were able to express.”



Practice Areas

  • Accounting/Finance
  • Arbitration
  • Business/Commercial
  • Class Action/Mass Tort
  • Construction Defect
  • Employment
  • Environmental
  • Estates/Probate/Trusts
  • Family Law
  • Franchise
  • Governmental/Public Agency
  • Healthcare
  • Insurance
  • Intellectual Property
  • Personal Injury/Torts
  • Professional Liability
  • Real Property
Available nationwide


This page is for general information purposes.  JAMS makes no representations or warranties regarding its accuracy or completeness.  Interested persons should conduct their own research regarding information on this website before deciding to use JAMS, including investigation and research of JAMS neutrals. See More