The Queen of England owns one-sixth of the earth’s land surface

Queen Elizabeth II owns more land than anyone else. She is also the Queen of 32 other countries and head of a Commonwealth of 54 countries in which a quarter of the world’s population lives. She is legal owner of about 6.6 billion acres of land equating to one-sixth of the earth’s land surface.

This is due to the prevalence of the British Empire. In 1920 the British Empire covered 13.7 million square miles, that’s about one quarter of the world’s total land area.

https://www.newstatesman.com/global-issues/2011/03/land-queen-world-australia