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
- Muhammad [ibn Musa al-Khwarizmi|Abu Ja'far Muhammad ibn Musa al-Khwarizmi]