251

Millennium: 1st millennium
Centuries:
Decades:
Years:
251 in various calendars
Gregorian calendar251
CCLI
Ab urbe condita1004
Assyrian calendar5001
Balinese saka calendar172–173
Bengali calendar−342
Berber calendar1201
Buddhist calendar795
Burmese calendar−387
Byzantine calendar5759–5760
Chinese calendar庚午年 (Metal Horse)
2948 or 2741
    — to —
辛未年 (Metal Goat)
2949 or 2742
Coptic calendar−33 – −32
Discordian calendar1417
Ethiopian calendar243–244
Hebrew calendar4011–4012
Hindu calendars
 - Vikram Samvat307–308
 - Shaka Samvat172–173
 - Kali Yuga3351–3352
Holocene calendar10251
Iranian calendar371 BP – 370 BP
Islamic calendar382 BH – 381 BH
Javanese calendar129–130
Julian calendar251
CCLI
Korean calendar2584
Minguo calendar1661 before ROC
民前1661年
Nanakshahi calendar−1217
Seleucid era562/563 AG
Thai solar calendar793–794
Tibetan calendar阳金马年
(male Iron-Horse)
377 or −4 or −776
    — to —
阴金羊年
(female Iron-Goat)
378 or −3 or −775
Gothic Invasion 250-251

Year 251 (CCLI) was a common year starting on Wednesday (link will display the full calendar) of the Julian calendar. At the time, in the Roman Empire, it was known as the Year of the Consulship of Traianus and Etruscus (or, less frequently, year 1004 Ab urbe condita). The denomination 251 for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years.