637

Millennium: 1st millennium
Centuries:
Decades:
Years:
637 in various calendars
Gregorian calendar637
DCXXXVII
Ab urbe condita1390
Armenian calendar86
ԹՎ ՁԶ
Assyrian calendar5387
Balinese saka calendar558–559
Bengali calendar44
Berber calendar1587
Buddhist calendar1181
Burmese calendar−1
Byzantine calendar6145–6146
Chinese calendar丙申年 (Fire Monkey)
3334 or 3127
    — to —
丁酉年 (Fire Rooster)
3335 or 3128
Coptic calendar353–354
Discordian calendar1803
Ethiopian calendar629–630
Hebrew calendar4397–4398
Hindu calendars
 - Vikram Samvat693–694
 - Shaka Samvat558–559
 - Kali Yuga3737–3738
Holocene calendar10637
Iranian calendar15–16
Islamic calendar15–16
Japanese calendarN/A
Javanese calendar527–528
Julian calendar637
DCXXXVII
Korean calendar2970
Minguo calendar1275 before ROC
民前1275年
Nanakshahi calendar−831
Seleucid era948/949 AG
Thai solar calendar1179–1180
Tibetan calendar阳火猴年
(male Fire-Monkey)
763 or 382 or −390
    — to —
阴火鸡年
(female Fire-Rooster)
764 or 383 or −389
The Muslim invasion of Northern Syria

Year 637 (DCXXXVII) was a common year starting on Wednesday (link will display the full calendar) of the Julian calendar. The denomination 637 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.