Millennium:	1st millennium
Centuries:	8th century 9th century 10th century
Decades:	830s 840s 850s 860s 870s
Years:	851 852 853 854 855 856 857

854 by topic
Leaders
Political entities State leaders Religious leaders
Categories
Births Deaths Establishments

854 in various calendars
Gregorian calendar	854 DCCCLIV
Ab urbe condita	1607
Armenian calendar	303 ԹՎ ՅԳ
Assyrian calendar	5604
Balinese saka calendar	775–776
Bengali calendar	261
Berber calendar	1804
Buddhist calendar	1398
Burmese calendar	216
Byzantine calendar	6362–6363
Chinese calendar	癸酉年 (Water Rooster) 3551 or 3344 — to — 甲戌年 (Wood Dog) 3552 or 3345
Coptic calendar	570–571
Discordian calendar	2020
Ethiopian calendar	846–847
Hebrew calendar	4614–4615
Hindu calendars
- Vikram Samvat	910–911
- Shaka Samvat	775–776
- Kali Yuga	3954–3955
Holocene calendar	10854
Iranian calendar	232–233
Islamic calendar	239–240
Japanese calendar	Ninju 4 / Saikō 1 (斉衡元年)
Javanese calendar	751–752
Julian calendar	854 DCCCLIV
Korean calendar	3187
Minguo calendar	1058 before ROC 民前1058年
Nanakshahi calendar	−614
Seleucid era	1165/1166 AG
Thai solar calendar	1396–1397
Tibetan calendar	阴水鸡年 (female Water-Rooster) 980 or 599 or −173 — to — 阳木狗年 (male Wood-Dog) 981 or 600 or −172

Year 854 (DCCCLIV) was a common year starting on Monday (link will display the full calendar) of the Julian calendar.

Events

Emperor Lothair I meets his (half) brothers (Louis the German and Charles the Bald) in Attigny, Ardennes for the third time, to continue the system of "con-fraternal government".
Viking chieftains Rorik and Godfrid Haraldsson return to Denmark, to gain power after the death of King Horik I. During a civil war, they are forced to go back to Friesland.^[1]
The German city of Ulm is first mentioned, in a document by Louis the German. ^[2]
Croatian–Bulgarian battle: Bulgarian Khan (later Knyaz) Boris I,^[3] attacks the Duchy of Littoral Croatia, ruled by Duke Trpimir I during the First Croatian-Bulgarian War. It is fought on the Croatian territory in the vicinity of the Croatian–Bulgarian border^[4] in present-day northeastern Bosnia and Herzegovina. None of the warring sides emerges victorious, Bulgarian forces retreat and finally both parties subsequently conclude a peace treaty.^[5]

King Æthelwulf of Wessex sends his two youngest sons, Alfred and Æthelred, on a pilgrimage to Rome.^[6]
King Æthelweard of East Anglia dies, and is succeeded by his 14-year-old son Edmund ("the Martyr").^[7]
King Cyngen of Powys makes the first pilgrimage to Rome of a Welsh ruler.
Viking chieftain Ubba winters in Milford Haven (Wales) with 23 ships.^[8]

Births