Robert S. Arns

Robert S. Arns is the founding partner of Arns Davis Law, based in San Francisco, California. A dedicated trial attorney, he focuses his practice on complex civil litigation, advocating for individuals and groups in high-stakes legal matters. His practice encompasses catastrophic personal injury, wrongful death, class actions, mass torts, consumer protection, product liability, sexual abuse and elder abuse. He represents clients across all nine counties of the Greater Bay Area.

Approaching his practice with a client-focused, methodical strategy, Mr. Arns emphasizes thorough preparation to address complex, high-stakes civil matters. By centering his work on catastrophic harm, systemic misconduct and consumer exploitation, he pursues structural accountability while seeking legal recourse for individuals and affected groups. His approach combines rigorous investigation with disciplined case management across mass torts, product liability and abuse cases, providing deliberate, steady advocacy for clients.

Throughout his career, Mr. Arns has achieved significant outcomes for those impacted by major harm, securing substantial compensation to relieve the financial burdens that follow catastrophic events. Driven by a commitment to holding negligent parties accountable, he provides principled representation designed to protect the long-term well-being of his clients and secure lasting stability for families across the nation facing life-altering challenges.

An alumnus of the University of San Francisco, Mr. Arns received his Juris Doctor at the University’s School of Law. While in law school, he served as the managing editor of the law review and was also a moot court champion. He gained licensure to practice law in California in 1975 and is additionally admitted to appear before the California Court of Appeal, the Supreme Court of California, the U.S. Court of Appeals for the 9th Circuit and the U.S. District Court for the Northern District of California.