Phone: 216.736.7209 Fax: 216.621.6536


Over his more than 20 years with KJK, Ari’s legal work has spanned a broad range of litigation, arbitration and corporate matters for individuals, investment firms, banks, manufacturers, real estate developers, title companies and businesses ranging in size from start-ups to publicly traded Fortune 500 companies. His substantive experience is diverse and includes securities, insurance, real estate, employment, ethics, professional liability and healthcare law.

Prior to joining KJK, Ari served as in-house counsel for a major health insurance company and then was associated with a small law firm, all along creating client relationships that have spanned decades. He has earned a reputation among his clients for being able to tackle even the most complex cases requiring multifaceted negotiations, trials, arbitrations, mediations and appeals.

Ari has served as Special Counsel to the State of Ohio.

Civic involvement and volunteerism have been an integral part of Ari’s life with much of his work benefiting the Jewish community. He has held leadership positions with the Jewish Federation of Cleveland, Mandel Jewish Community Center, Fuchs Mizrachi School, Green Road Synagogue, Cleveland Hillel Foundation and the Cleveland Jewish News.

“I am fortunate that my parents and grandparents instilled in me a duty of public service.” – Ari H. Jaffe


  • Case Western Reserve University School of Law, J.D., 1986
  • Brandeis University, B.A. 1983, with honors

Civic Involvement

  • American Friends of Ogen, Inc. (fka. Israel Free Loan Association), President
  • Brandeis University Hillel, Board Member
  • City of University Heights, Chair of the Board of Zoning Appeals
  • Cleveland Hillel Foundation, Past Board Member
  • Cleveland Jewish News, Board Member
  • Cuyahoga County Democratic Party, Member of the Executive Committee
  • Fuchs Mizrachi School, Model UN and Prelaw Advisor and Past Board Member
  • Green Road Synagogue, Board Member and Past President
  • Jewish Education Center of Cleveland, Past Board Member
  • Jewish Federation of Cleveland, Volunteer and Past Board Member
  • John Carroll University, Past Community Liaison Panel Member
  • Legal Aid Society, Member of Volunteer Lawyers Program
  • Mandel Jewish Community Center, Past Board Member
  • Wexner Heritage Foundation, Seminar Graduate

Professional Affiliations

  • American Bar Association
  • American Bar Foundation, Fellow
  • Case Western Reserve School of Law, Law and Medicine Center, Charter Member of Advisory Committee
  • Cleveland Metropolitan Bar Association Member, Past Member of Certified Grievance Committee
  • Cuyahoga County Court of Common Pleas, Arbitrator and Mediator
  • Judicial Conference of the Eighth Judicial District, Life Member

Bar / Court Admissions

  • Supreme Court of Ohio
  • United States District Court, Northern District of Ohio
  • District of Columbia, Court of Appeals
  • Sixth Circuit Court of Appeals
  • United States Tax Court


  • Selected to Ohio Super Lawyers 2013-2020
  • Jewish Federation of Cleveland, Yanowitz Leadership Award
  • Martindale-Hubbell AV Preeminent Peer Rated for Highest Level of Professional Excellence

Presentations & Publications

  • Author of articles in the fields of securities, estate planning and health care law.
  • Presenter of conferences in the fields of securities, real estate, estate planning, tax and health care law.
  • Website developer of and

Representative Experience

“Ari is one of the most ethical and knowledgeable individuals I have ever met of the legal profession. He consistently strives to ensure positive outcomes for his clients. Ari has represented me at various times throughout my life and career. He is always available for consult, and makes sure that one is kept in the loop at all times.”

  • Representing major investment firm in defense of customer and employment lawsuits and arbitrations
  • Helping individuals and families successfully recover assets lost through investment fraud through negotiation, arbitration, litigation, class actions and multi-district litigation
  • Defending clients faced with investigations by the Financial Industry Regulatory Authority, the U.S. Securities and Exchange Commission and the Ohio Department of Commerce
  • Representing start-up companies in sales to established businesses
  • Representing employers in insurance disputes
  • Guiding long-term clients through company start-up, finance, growth, sale, acquisition and merger

Media Mentions