Kaiser Permanente is an American integrated managed care consortium, based in Oakland, California, United States, founded in 1945 by industrialist Henry J. Kaiser and physician Sidney Garfield. Kaiser Permanente is made up of three distinct but interdependent groups of entities: the Kaiser Foundation Health Plan, Inc. (KFHP) and its regional operating subsidiaries; Kaiser Foundation Hospitals; and the regional Permanente Medical Groups. As of 2023, Kaiser Permanente operates in eight states and the District of Columbia, and is the largest managed care organization in the United States.

Henry John Kaiser was an American industrialist who became known for his shipbuilding and construction projects, then later for his involvement in fostering modern American health care. Prior to World War II, Kaiser was involved in the construction industry; his company was one of those that built the Hoover Dam. He established the Kaiser Shipyards, which built Liberty ships during World War II, after which he formed Kaiser Aluminum and Kaiser Steel. Kaiser organized Kaiser Permanente health care for his workers and their families. He led Kaiser-Frazer followed by Kaiser Motors, automobile companies known for the safety of their designs. Kaiser was involved in large construction projects such as civic centers and dams, and invested in real estate, later moving into television broadcasting. With his wealth, he established the Kaiser Family Foundation, a nonprofit, non-partisan, charitable organization.