On This Day, April 23
- 2024: The 2024 Lumut mid-air collision in Malaysia kills 10 people while rehearsing for the 90th anniversary of the Royal Malaysian Navy.
- 2019: The April 2019 Hpakant jade mine collapse in Myanmar kills four miners and two rescuers, with at least 50 others missing and presumed dead.
- 2018: A vehicle-ramming attack kills 11 people and injures 15 in Toronto. A 25-year-old suspect, Alek Minassian, is arrested.
- 2013: At least 111 people are killed and 233 injured as violence breaks out in Hawija, Iraq.
- 2005: The first YouTube video, titled "Me at the zoo", is published by co-founder Jawed Karim.