Events that occurred on 1 June.
 On Earth
- 1840 - George William Tolkien dies.
- 1914 - George Sayer, friend of J.R.R. Tolkien, is born.
- 1917 - J.R.R. Tolkien is considered fit for service again, but he is not reassigned to the Lancashire Fusilliers.
- 1961 - J.R.R. Tolkien writes a letter to Jan Broberg.
- 1966 - J.R.R. Tolkien writes a letter to Royston F. Porthouse.
- 2005 - Tolkien and the Great War is released in paperback in the US.
- 2006 - Tolkien Studies: Volume 3 is published.
 In Arda
- There are no known events on this day.