Historical events on the 11th of October
- 1142 – A peace treaty between the Jin dynasty and Southern Song dynasty is formally ratified, ending the Jin–Song wars.
- 1634 – The Burchardi flood kills around 15,000 in North Friesland, Denmark and Germany.
- 1811 – Inventor John Stevens' boat, the Juliana, begins operation as the first steam-powered ferry (service between New York City, New York, and Hoboken, New Jersey).