October–December
- October 3 – In the Kingdom of the Two Sicilies, a railway between Naples and Portici (7.4 km length) is inaugurated by H.M. King Ferdinand II of Bourbon (the first railway in the Italian peninsula).
- October 15 – Abd al-Kader declares a jihad against the French.
- November 4 – The Newport Rising is the last large-scale armed rebellion against authority in mainland Britain.
- November 11 – The Virginia Military Institute is founded in Lexington, Virginia.
- November 17 – Giuseppe Verdi's first opera, Oberto, conte di San Bonifacio, opens in Milan.
- November 25 – A disastrous cyclone slams India with terrible winds and a giant 40-foot storm surge, wiping out the port city of Coringa; 300,000 people die.
- November 27 – In Boston, Massachusetts, the American Statistical Association is founded.