The following events occurred in 1943:
- Tom Riddle opens the Chamber of Secrets. Several students are injured, and Moaning Myrtle is killed by the Basilisk. Rubeus Hagrid is framed for the attacks by Riddle and is expelled. With the murder of Moaning Myrtle, Tom Riddle transforms his diary into his first horcrux.
- Summer: Tom Riddle murders his father, Tom Riddle Sr., and his grandparents, Thomas and Mary Riddle, for the abandoning of his late mother, Merope Gaunt. His uncle, Morfin Gaunt is framed for the attacks by Riddle and is sent to Azkaban.  With the murder of the Riddles, Tom Riddle transforms Marvolo Gaunt's Ring into his second horcrux.
- Cygnus Black II
- 13 June: Myrtle Warren
- Summer: Tom Riddle Sr.
- Summer: Thomas Riddle
- Summer: Mary Riddle
Behind the scenes
Notes and references
|20th century : 1940s|
|1940 - 1941 - 1942 - 1943 - 1944 - 1945 - 1946 - 1947 - 1948 - 1949|
| 20th century|
1900s 1910s 1920s 1930s 1940s 1950s 1960s 1970s 1980s 1990s