850s

The 850s decade ran from January 1, 850, to December 31, 859.

Significant people

 * Al-Mutawakkil
 * Charles the Bald
 * Louis the German
 * Lothar
 * Ethelwulf of Wessex
 * Bardas
 * Kenneth I of Scotland
 * Halfdan the Black
 * Abu Ja'far Muhammad ibn Musa al-Khwarizmi