Events that occurred on 17 November.
 On Earth
- 1954 – J.R.R. Tolkien writes a letter to Rayner Heppenstall.
- 1957 – J.R.R. Tolkien writes a letter to Dr. Herbert Schiro (letter 203).
- 1957 – J.R.R. Tolkien writes a letter to Przemyslaw Mroczkowski.
- 1968 – The Clouds Burst, the eighth and last episode of the 1968 radio series of The Hobbit, is aired on BBC Radio.
- 1996 – The website of Forodrim’s language guild, Mellonath Daeron, goes online.
- 2011 – The Lord of the Rings: War in the North is released in Brazil.