833

833 in various calendars
Gregorian calendar	833; DCCCXXXIII
Ab urbe condita	1586
Armenian calendar	282; ԹՎ ՄՁԲ
Assyrian calendar	5583
Balinese saka calendar	754–755
Bengali calendar	240
Berber calendar	1783
Buddhist calendar	1377
Burmese calendar	195
Byzantine calendar	6341–6342
Chinese calendar	壬子年 (Water Rat); 3530 or 3323; — to —; 癸丑年 (Water Ox); 3531 or 3324
Coptic calendar	549–550
Discordian calendar	1999
Ethiopian calendar	825–826
Hebrew calendar	4593–4594
Hindu calendars
- Vikram Samvat	889–890
- Shaka Samvat	754–755
- Kali Yuga	3933–3934
Holocene calendar	10833
Iranian calendar	211–212
Islamic calendar	217–218
Japanese calendar	Tenchō 10; (天長１０年)
Javanese calendar	729–730
Julian calendar	833; DCCCXXXIII
Korean calendar	3166
Minguo calendar	1079 before ROC; 民前1079年
Nanakshahi calendar	−635
Seleucid era	1144/1145 AG
Thai solar calendar	1375–1376
Tibetan calendar	阳水鼠年; (male Water-Rat); 959 or 578 or −194; — to —; 阴水牛年; (female Water-Ox); 960 or 579 or −193

Millennium:	1st millennium
Centuries:	8th century; 9th century ; 10th century;
Decades:	810s; 820s; 830s ; 840s; 850s;
Years:	830; 831; 832; 833 ; 834; 835; 836;

Year 833 (DCCCXXXIII) was a common year starting on Wednesday (link will display the full calendar) of the Julian calendar.

Events

Byzantine-Arab War: Emperor Theophilos signs an armistice for peace with the Abbasid Caliphate. He offers Caliph Al-Ma'mun 100,000 gold dinars, in return for 7,000 Byzantine prisoners.^[1]

June – Lothair I, eldest son of Emperor Louis the Pious, joins the rebellion of his brothers Pepin I and Louis the German, with the assistance of Archbishop Ebbo. Louis is forced to abdicate, on the plains of Rothfield (near Colmar).
Mojmir I, Moravian duke, expels Prince Pribina from his homeland (western part of modern Slovakia). He unifies Great Moravia and becomes the first known ruler of the Moravian Slavs, who founds the House of Mojmir (approximate date).
Galindo Aznárez I, Frankish count, usurps the Catalan counties (pagi) of Pallars and Ribagorza, in the Spanish March (modern Spain), a buffer zone between the Pyrenees and the Ebro River.

August 7 – Caliph Al-Ma'mun dies after a 20-year reign. He is succeeded two days later by his half-brother al-Mu'tasim, as ruler of the Abbasid Caliphate.
Ibn Hisham, Muslim historian, collects oral traditions that form the basis for the biography of the Islamic prophet Muhammad.

Emperor Junna abdicates the throne, after a 10-year reign. He is succeeded by his nephew Nimmyō, as the 54th emperor of Japan.