Wikipedia:Selected anniversaries/October 7
- 3761 BC - The epoch of the modern Hebrew calendar.
- 1571 - Battle of Lepanto: The Ottoman Empire was decisively defeated by the Christian West for the first time, as a multinational fleet led by Don John of Austria crushed the Turkish navy near the Gulf of Corinth.
- 1985 - The Mediterranean ocean liner Achille Lauro was hijacked by Palestinian terrorists.
- 2001 - The Invasion of Afghanistan began at 16:30 UTC with an aerial bombing campaign targeting Taliban and Al-Qaida forces.
- 2003 - California recall: Californians voted to recall Governor Gray Davis from office, electing Arnold Schwarzenegger as the new governor from a long list of 135 candidates.