Wikipedia:Selected anniversaries/November 18
- 1210 – Otto IV, Holy Roman Emperor, was excommunicated by Pope Innocent III after Otto commanded him to annul the Concordat of Worms.
- 1987 – An underground fire killed 31 people at King's Cross St Pancras tube station in London.
- 1999 – Texas A&M University's Aggie Bonfire collapsed (aftermath pictured), killing 12 people and injuring 27 others, and causing the university to officially declare a hiatus on the 90-year-old annual event.
- 2017 – Cyclone Numa, a rare "medicane", made landfall in Greece to become the worst weather event that the country had experienced since 1977.