Events that occurred on 20 November.
 On Earth
- 1962 – C. S. Lewis writes a letter to J.R.R. Tolkien.
- 1985 – The Lays of Beleriand is published in the US.
- 2007 – The Lord of the Rings: The Return of the King - The Complete Recordings is published.
- 2008 – Tolkien, Race and Cultural History: From Fairies to Hobbits is published.