Events that occurred on 24 March
 On Earth
- 1834 - William Morris, artist and author who influenced J.R.R. Tolkien, is born.
- 1953 - J.R.R. Tolkien writes Letter 136.
- 1967 - J.R.R. Tolkien writes Letter 295.
- 2002 - The Lord of the Rings: The Fellowship of the Ring wins four Oscars, out of thirteen nominations, at the 74th Academy Awards.
- 2011 - Update 2: Echoes of the Dead, the second update of The Lord of the Rings Online, is released in Europe.