July 29: Ólavsøka in the Faroe Islands; National Anthem Day in Romania.
- 1030 - King Olaf II (pictured) fought and died in the Battle of Stiklestad, trying to regain his Norwegian throne from the Danes.
- 1900 - Italian American anarchist Gaetano Bresci assassinated King Umberto I of Italy.
- 1947 - ENIAC, the world's first all-electronic digital computer, was turned on; it remained in continuous operation until October 2, 1955.
- 1954 - The Fellowship of the Ring, the first part of The Lord of the Rings by J.R.R. Tolkien, was published in the United Kingdom.
- 1957 - The International Atomic Energy Agency was established.