Thatched House Lodge is a Grade II-listed building, dating from the 17th century, in Richmond Park in the London Borough of Richmond upon Thames in London, England. It was the home of British prime minister Sir Robert Walpole and, since 1963, has been a royal residence, being leased from the Crown Estate by Princess Alexandra, The Honourable Lady Ogilvy, and, until his death in 2004, her husband, Sir Angus Ogilvy.

Princess Alexandra, The Honourable Lady Ogilvy, is a member of the British royal family. The only daughter of Prince George, Duke of Kent, and Princess Marina of Greece and Denmark, she is a granddaughter of George V, niece of Edward VIII and George VI, and first cousin of Elizabeth II. Alexandra's mother was also a first cousin of Prince Philip, Duke of Edinburgh, consort of Elizabeth II, making her both a second cousin and first cousin once removed to Charles III.