The State Bar of California is an administrative division of the Supreme Court of California which licenses attorneys and regulates the practice of law in California. It is responsible for managing the admission of lawyers to the practice of law, investigating complaints of professional misconduct, prescribing appropriate discipline, accepting attorney-member fees, and financially distributing sums paid through attorney trust accounts to fund nonprofit legal entities. It is directly responsible to the Supreme Court of California; however, its trustees are now appointed by the Supreme Court, the California Legislature, and Governor of California. All attorney admissions are issued as recommendations of the State Bar, which are then routinely ratified by the Supreme Court. Attorney discipline is handled by the State Bar Office of Chief Trial Counsel, which acts as prosecutor before the State Bar Court of California. The State Bar has been cited for its corrupt practices during the 21st century, and is subject to reforms issued by its governing body, the California Supreme Court.

A bar association is a professional association of lawyers as generally organized in countries following the Anglo-American types of jurisprudence. The word bar is derived from the old English/European custom of using a physical railing to separate the area in which court business is done from the viewing area for the general public.