About Us

Darrell Vienna is renowned for his efforts on behalf of horsemen throughout the racing world having represented or assisted horsemen in Arkansas, Arizona, California, Delaware, Florida, Kentucky, Massachusetts, New York, Great Britain, Hong Kong, and Singapore.  His efforts have resulted in numerous acquittals for licensees charged with violations of racing regulations.

A graduate of the University of California and Loyola Law School, Mr. Vienna has been practicing equine law for over two decades.  That experience has allowed him to establish strong networking relationships with leading equine practitioners across the nation.  Clients can be assured of vigorous and well-coordinated representation based on experience and know-how.


Mr. Vienna has been licensed as a thoroughbred trainer in 25 racing jurisdictions.  During his training career, his horses earned over $50,000,000 and he saddled more than 1,200 winners, including 68 graded stakes winners.

Mr. Vienna was elected as officer and director of the California Horsemen’s Benevolent and Protective Association and the California Thoroughbred Trainers.  He has served as a contract consultant to the California Horse Racing Board tasked with reviewing the agency’s regulatory framework and streamlining its administrative hearings.  He has successfully litigated matters against racing commissions and racetracks.  He has also consulted on Standardbred and Quarter Horse matters as well.

Given his background, education, and accomplishments, Mr. Vienna is regarded as a preeminent authority in equine law and all aspects of horse racing, regardless of breed or jurisdiction.


We provide clear and simple advice ensuring that you fully understand
all the options so we can together make a balanced decision on how to proceed.