657

Millennium: 1st millennium
Centuries:
Decades:
Years:
657 in various calendars
Gregorian calendar657
DCLVII
Ab urbe condita1410
Armenian calendar106
ԹՎ ՃԶ
Assyrian calendar5407
Balinese saka calendar578–579
Bengali calendar64
Berber calendar1607
Buddhist calendar1201
Burmese calendar19
Byzantine calendar6165–6166
Chinese calendar丙辰年 (Fire Dragon)
3354 or 3147
    — to —
丁巳年 (Fire Snake)
3355 or 3148
Coptic calendar373–374
Discordian calendar1823
Ethiopian calendar649–650
Hebrew calendar4417–4418
Hindu calendars
 - Vikram Samvat713–714
 - Shaka Samvat578–579
 - Kali Yuga3757–3758
Holocene calendar10657
Iranian calendar35–36
Islamic calendar36–37
Japanese calendarHakuchi 8
(白雉8年)
Javanese calendar548–549
Julian calendar657
DCLVII
Korean calendar2990
Minguo calendar1255 before ROC
民前1255年
Nanakshahi calendar−811
Seleucid era968/969 AG
Thai solar calendar1199–1200
Tibetan calendar阳火龙年
(male Fire-Dragon)
783 or 402 or −370
    — to —
阴火蛇年
(female Fire-Snake)
784 or 403 or −369
Pope Vitalian (657–672)

Year 657 (DCLVII) was a common year starting on Sunday (link will display the full calendar) of the Julian calendar. The denomination 657 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.