Walter Hubert Annenberg KSG KBE (March 13, 1908 – October 1, 2002) was an American businessman, investor, philanthropist, and diplomat. Annenberg owned and operated Triangle Publications, which included ownership of The Philadelphia Inquirer, TV Guide, the Daily Racing Form and Seventeen magazine. He was appointed by President Richard Nixon as United States Ambassador to the United Kingdom, where he served from 1969 to 1974.
During his tenure as U.S. ambassador to the United Kingdom, he developed a close friendship with Queen Elizabeth II and other members of the royal family. After initial perceived missteps, he came to be admired for his dedicated work ethic, his wife's lavish entertaining, and personal gifts to support patriotic British causes, such as the restoration of St. Paul's Cathedral in London. He also paid for the renovation of Winfield House, the American ambassador's residence.