Charles Thomas Munger (January 1, 1924 – November 28, 2023) was an American businessman, investor, attorney and philanthropist. He was the vice chairman of Berkshire Hathaway, the conglomerate controlled by Warren Buffett, from 1978 until his death in 2023. Buffett described Munger as his closest partner and right-hand man, and credited him with being the "architect" of modern Berkshire Hathaway's business philosophy.
In addition to his role at Berkshire Hathaway, Munger was a founding partner of the California law firm of Munger, Tolles & Olson; chairman of Wesco Financial Corporation from 1984 through 2011; chairman of the Daily Journal Corporation, based in Los Angeles, California; and a director of Costco Wholesale Corporation.