Events that occurred on 23 November.
On Earth
- 1953 - Composer Johan de Meij is born.
- 1962 – The literary supplement of The Times runs a review of The Adventures of Tom Bombadil.
- 1972 - J.R.R. Tolkien writes letter 343a.
- 1972 - J.R.R. Tolkien writes Letter 344.
- 2000 – Rayner Unwin, without whom The Hobbit would never have been published, dies.
- 2002 - Ring*Con 2002 in Bonn, Germany.
- 2009 - Parma Eldalamberon issue 18 is published.