Events that occurred on 29 June.
 On Earth
- 1917 - J.R.R. Tolkien succumbs to gastritis while at Brocton Camp, and is sent to Brooklands Officers' Hospital in Kingston-upon-Hull.
- 1935 - Author Robert Giddings is born.
- 1944 - J.R.R. Tolkien writes Letter 74.
- 1955 - J.R.R. Tolkien writes the Preface to The Ancrene Riwle.
- 1955 - J.R.R. Tolkien writes Letter 164.
- 1966 - Gene Deitch's ashcan animation of The Hobbit is shown to a limited audience in New York City.
- 1972 - The Daily Telegraph describes actions of the Forestry Commission as bringing a "Tolkien gloom". Tolkien responds.
- 1976 - Actor Bret McKenzie is born.
- 1977 - J.R.R. Tolkien: A Biography is published in the US.
 In Arda
- There are no known events on this day.