Jeff J. Horn Jr

Phone

214.743.4170 (Dallas)　

646.257.3680 (New York)

Fax

214.743.4179 (Dallas)　

646.257.3681 (New York)

Affiliations

Entrepreneurs Organization, Dallas Chapter.
Japan-American Society of Dallas/Ft. Worth (General Counsel, 2001-2002; Member of the Board of Directors, 2001-2002, 2004 to 2006).

Bar Admissions

New York State Bar Association.
State Bar of Texas.
Louisiana State Bar Association.
U.S. District Court for the Southern District of New York.
U.S. District Court for the Northern District of Texas.
U.S. District Court for the Eastern District of Texas.
U.S. District Court for the Western District of Texas.
U.S. District Court for the Southern District of Texas.
U.S. District Court for the Eastern District of Louisiana.
U.S. District Court for the Western District of Louisiana.

Education

Southern Methodist University School of Law, Juris Doctor. Cum laude.
The University of Utah, Bachelor of Arts, International Relations, Japanese, and Asian History. Cum laude. Recipient of President's Award for Outstanding Scholastic Achievement.

Languages

English
Japanese

Biography

Jeff is one of less than 10 lawyers in Texas named to the 2026 Super Lawyers list in the International practice area. 2026 marks the 14th consecutive year he was selected. Jeff co-founded Ohashi & Horn LLP, a boutique firm with offices in Dallas, New York, and Tokyo, over twenty years ago after beginning his career as a top associate at Jackson Walker LLP, one of Texas' oldest law firms. Jeff's tenacity, creativity, and business acumen have made him a trusted adviser of executives of multi-national corporations, principals of prominent investment firms, and entrepreneurs. Jeff maintains an extremely diverse international practice that includes forming and structuring entities, venture capital finance, corporate governance, mergers and acquisitions, complex commercial litigation, labor and employment, and intellectual property matters. Fluent in Japanese, Jeff has more than 30 years of experience related to Asia, including living in Japan for two years. Practicing in Dallas, New York, and Tokyo, Jeff has an uncommon perspective and understanding of the global business environment.

Outside of law practice, Jeff is an entrepreneur, martial artist, athlete, and outdoorsman. A JiuJitsu Black Belt under Xande Ribeiro, Jeff and is a 6 time International Brazilian JiuJitsu Federation World Master Champion, 12 time Pan American Champion, 2 time Japanese National Champion, European International Master Champion, and Abu Dhabi Grand Slam Champion. Jeff is also an avid powerlifter, and his passion for grappling and weightlifting inspired him to create a premier training facility near downtown Dallas. The discipline, grit, iron will, and strategic mindset Jeff has developed as a life-long competitive athlete and martial artist allow him to guide his clients through the most challenging aspects of the international business world and legal landscape.

What Clients Say:

"Jeff has represented us in several corporate and litigation matters since we started our investment firm over six years ago. It is rare to find a counselor who has the acumen to handle both business transactions and complex commercial litigation. Jeff has a natural ability to take control of and find a resolution in the most challenging and complex situations. He has been a critical asset and a true partner in our growth and success."

Brandon W. Freeman
Freeman Group

"Pugnacious when needed but always professional, Jeff has proven to be an invaluable partner. He is not only a skilled American lawyer—with knowledge of both the American and Japanese legal landscapes and cultures—he is an internationally minded asset to any multi-national organization."

Satoru Ando, President & CEO
Sumisho Computer Systems (USA), Inc.

"Jeff has worked with many of our employees over the years to address various legal matters, and we have always been impressed with his tough, open, and honest approach. With his vast knowledge of our people and company as well as the law, we have entrusted him to manage our employee hotline and to be the first person for our employees to consult when they have an issue."

Alvin Proctor, SPHR
Vice President of Human Resources
Kaneka North America LLC
Kaneka Americas Holding, Inc.

"Jeff handled a case of first impression involving a complex corporate merger. His tenacious, thorough preparation resulted in a total victory on the eve of trial—the opposition dismissed all of their claims with prejudice. It was a display of superb preparedness."

William B. Owens
Crowell and Owens, L.L.C.

Founding Partner