Events that occurred on 13 February.
 On Earth
- 1883 - The composer Richard Wagner dies.
- 1908 - Voice actor Patrick Barr is born.
- 1923 - J.R.R. Tolkien writes Letter 6.
- 1934 - J.R.R. Tolkien's poem "The Adventures of Tom Bombadil" is published in The Oxford Magazine.
- 1944 - John Tolkien is made an Exorcist and Acolyte in a ceremony at Stonyhust.
- 1979 - The Tolkien Quiz Book by Andrews and Zuber is published.
- 2008 - The Lord of the Rings Online: Shadows of Angmar, "The Ashen Wastes" is released in North America.