634

Millennium: 1st millennium
Centuries:
Decades:
Years:
634 in various calendars
Gregorian calendar634
DCXXXIV
Ab urbe condita1387
Armenian calendar83
ԹՎ ՁԳ
Assyrian calendar5384
Balinese saka calendar555–556
Bengali calendar41
Berber calendar1584
Buddhist calendar1178
Burmese calendar−4
Byzantine calendar6142–6143
Chinese calendar癸巳年 (Water Snake)
3331 or 3124
    — to —
甲午年 (Wood Horse)
3332 or 3125
Coptic calendar350–351
Discordian calendar1800
Ethiopian calendar626–627
Hebrew calendar4394–4395
Hindu calendars
 - Vikram Samvat690–691
 - Shaka Samvat555–556
 - Kali Yuga3734–3735
Holocene calendar10634
Iranian calendar12–13
Islamic calendar12–13
Japanese calendarN/A
Javanese calendar524–525
Julian calendar634
DCXXXIV
Korean calendar2967
Minguo calendar1278 before ROC
民前1278年
Nanakshahi calendar−834
Seleucid era945/946 AG
Thai solar calendar1176–1177
Tibetan calendar阴水蛇年
(female Water-Snake)
760 or 379 or −393
    — to —
阳木马年
(male Wood-Horse)
761 or 380 or −392
The Rashidun Caliphate invade the Levant
Muslim invasion of Khalid ibn al-Walid in Syria

Year 634 (DCXXXIV) was a common year starting on Saturday (link will display the full calendar) of the Julian calendar. The denomination 634 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.