Events that occurred on 16 April.
 On Earth
- 1881 – Artist Josef Madlener is born.
- 1891 – Arthur Tolkien and Mabel Suffield marry.
- 1940 - Artist Margrethe II of Denmark is born.
- 2007 – The Children of Húrin is published in the UK and Europe.
- 2007 - The second day of The Children of Húrin Release Party is hosted by Tolkien Gateway.
- 2020 - Animator Gene Deitch, director of The Hobbit (1966 film) dies.
 In Arda
- There are no known events for this day.