Portal:Biography/Selected anniversaries/June 25
- 1852 – Antoni Gaudí, Catalan architect (d. 1926) (pictured)
- 1900 – Louis Mountbatten, 1st Earl Mountbatten of Burma, Viceroy of India (d. 1979)
- 1903 – George Orwell, English writer (d. 1950)
- 1945 – Carly Simon, American singer
- 1946 – Roméo Dallaire, Canadian General
- 1963 – George Michael, English singer (d. 2016)
- 1966 – Dikembe Mutombo, Congolese basketball player
- 1970 – Lucy Benjamin, English actress
- 1972 – Carlos Delgado, Puerto Rican Major League Baseball player
- 1975 – Manoj Kumar Pandey, Indian Army (d. 1999)
- 1975 – Vladimir Kramnik, Russian chess player
- 1533 – Mary Tudor, queen consort of Louis XII of France (b. 1496)
- 1822 – E. T. A. Hoffmann, German writer, composer, and painter (b. 1776)
- 1876 – George Armstrong Custer, U.S. Army officer (killed in battle) (b. 1839)
- 1976 – Johnny Mercer, American songwriter (b. 1909)
- 1997 – Jacques-Yves Cousteau, French explorer, scientist, and inventor (b. 1910)
- 2009 – Farrah Fawcett, American actress (cancer) (b. 1947)
- 2009 – Michael Jackson, American singer and actor (cardiac arrest) (b. 1958)