Gregory R. Vanni

Gregory R. Vanni is the managing partner of Thon Beck Vanni Callahan & Powell in Pasadena, California. He specializes in personal injury cases and represents clients in Pasadena and throughout southern California. Mr. Vanni earned his Bachelor of Arts degree (magna cum laude) from California State Polytechnic University and his Juris Doctor from Loyola Law School. He is a past president of the Pasadena Bar Association, and a member of the Consumer Attorneys of California, Consumers Attorneys of Los Angeles, Italian American Bar Association, Los Angeles County Bar Association, Trial Lawyers for Public Justice, and the American Association for Justice.


unnamedMr. Vanni was honored by the Consumer Attorneys of California with their highest accolade, the 2014 Consumer Attorney of the Year Award. Gregory has also been awarded the 2014 Avvo Clients’ Choice Award. In addition to an award winning year, over the course of his career, he has achieved significant victories in high profile cases including a $23.2 million recovery for victims of a collapsing conveyor system, a $20 million settlement for a serious automobile crash, a $10 million settlement for a motorcycle accident victim, and an $8.1 million recovery against the State of California and a trucking company in a motorcycle crash,California’s largest settlement in a motor vehicle case for 2014. Mr. Vanni has been named as one of the Top 100 Southern California Super Lawyers by Los Angeles Magazine. He serves on the program committee for Five Acres and on the board of overseers at Loyola Law School. Mr. Vanni has also served on the board of Union Station Homeless Services. He continues to be a popular choice for clients who seek qualified and professional legal assistance.


When you become our client at Thon Beck Vanni Callahan & Powell, you’ll be represented by an experienced Pasadena personal injury attorney, treated with complete respect, and provided with every possible courtesy and consideration. We explain how the law impacts your case, and we keep you informed as your claim moves through the legal system. Get the trustworthy legal representation you need; if you’ve been injured in southern California, call Thon Beck Vanni Callahan & Powell today at 626-795-8333 or contact us online right now to schedule a free initial consultation.


  • Pedestrian v. Mass Transit: $2,250,000
  • Pedestrian v. Mass Transit: $2,250,000
  • Product Liability: $23.2 million
  • Product Liability: $5 million
  • Auto v. California: $20 million