Events that occurred on 16 August
 On Earth
- 1920 - Translator Max Schuchart is born.
- 1934 - Author Diana Wynne Jones is born.
- 1943 - Actress Sharon Baird is born.
- 1964 - J.R.R. Tolkien writes Letter 260.
- 1975 - Mythcon VI at Scripps College in Claremont, California.
- 1976 - Mythcon VII in Sacramento, California.
- 1981 - The twenty-fourth episode of the 1981 radio series of The Lord of the Rings is aired on BBC Radio 4.
- 1982 - Mythcon XIII at Chapman College in Orange, California.
- 1984 - The Book of Lost Tales Part Two is published in the UK.
- 1992 - The first part of the 1992 radio series of Farmer Giles of Ham is aired on BBC Radio 5.
- 1992 - Tolkien Centenary Conference, a combination of Oxonmoot 1992 and Mythcon XXIII, at Keble College, Oxford.
- 2002 - The Annotated Hobbit: Revised and Expanded Edition is published.
- 2008 - Mythcon XXXIX at Central Connecticut State University in New Britain, Connecticut.
- 2010 - "Edge of the Wild", Tolkien art exhibition in Moreton-in-Marsh, England.
- 2012 - The Return of the Ring, Tolkien Society conference at Loughborough University, England.