Events that occurred on 10 October.
 On Earth
- 1920 - Voice actor Victor Platt is born.
- 1929 - Writer and actor Bernard Mayes is born.
- 1936 - Stanley Unwin reads the typescript of The Hobbit.
- 1964 - The first episode of the Princess-serialization of The Hobbit is published.
- 1964 - Voice actor Quinton Flynn is born.
- 1968 - J.R.R. Tolkien writes a letter to Mary Fairburn.
- 1979 - The Jackanory episode "Fire and Water" is aired on the BBC.
- 2006 - The J.R.R. Tolkien Encyclopedia is published.
- 2010 - Chilean Tolkien Society's Mereth Oronnad.
- 2017 - Middle-earth: Shadow of War is released.