Events that occurred on 15 May
On Earth
- 1945 - J.R.R. Tolkien writes Letter 99.
- 1945 - Inkling Charles Williams dies.
- 1967 - Linguist Ivan Derzhanski is born.
- 2004 - The Tolkien Society's Tolkien Weekend in Sarehole, Birmingham.
- 2007 - Artist Angus McBride dies.
- 2010 - The Tolkien Society's Middle-earth Weekend in Sarehole, Birmingham.
- 2015 - Voice actor John Stephenson dies.
In Arda
- There are no known events for this day.