Events that occurred on 30 August
 On Earth
- 1952 - Translator Helmut W. Pesch born.
- 1964 - J.R.R. Tolkien writes Letter 261.
- 1964 - J.R.R. Tolkien writes a letter to L. Sprague de Camp.
- 1973 - J.R.R. Tolkien goes to a birthday party for Denis Tolhurst's wife.
- 1981 - The twenty-sixth and last episode of the 1981 radio series of The Lord of the Rings is aired on BBC Radio 4.
- 1992 - The 1992 radio series of Smith of Wootton Major is aired on BBC Radio 5.
- 2012 - Tolkien Calendar 2013 is published.
- 2018 - The Fall of Gondolin is published.
- 2018 - Tolkien Calendar 2019 is published.