Events that occurred on 1 May.
 On Earth
- 1917 - J.R.R. Tolkien attends a medical board examination. He spends some time at Hornsea Musketry Camp.
- 1917 - Actress Pauline Letts is born.
- 1946 - Actress Nellie Bellflower is born.
- 1972 - J.R.R. Tolkien writes a letter to Donna Sadlier.
- 2004 - There and Back Again: In the Footsteps of J.R.R. Tolkien's England is published.
- 2007 - The History of The Hobbit volume 1 is published.
- 2008 - The Lord of the Rings Online: Shadows of Angmar, "Doom of the Last-King" is released in Europe.
 In Arda
- T.A. 2942:
- T.A. 3018:
- T.A. 3019:
- T.A. 3020: