491

Millennium: 1st millennium
Centuries:
Decades:
Years:
491 in various calendars
Gregorian calendar491
CDXCI
Ab urbe condita1244
Assyrian calendar5241
Balinese saka calendar412–413
Bengali calendar−102
Berber calendar1441
Buddhist calendar1035
Burmese calendar−147
Byzantine calendar5999–6000
Chinese calendar庚午年 (Metal Horse)
3188 or 2981
    — to —
辛未年 (Metal Goat)
3189 or 2982
Coptic calendar207–208
Discordian calendar1657
Ethiopian calendar483–484
Hebrew calendar4251–4252
Hindu calendars
 - Vikram Samvat547–548
 - Shaka Samvat412–413
 - Kali Yuga3591–3592
Holocene calendar10491
Iranian calendar131 BP – 130 BP
Islamic calendar135 BH – 134 BH
Javanese calendar377–378
Julian calendar491
CDXCI
Korean calendar2824
Minguo calendar1421 before ROC
民前1421年
Nanakshahi calendar−977
Seleucid era802/803 AG
Thai solar calendar1033–1034
Tibetan calendar阳金马年
(male Iron-Horse)
617 or 236 or −536
    — to —
阴金羊年
(female Iron-Goat)
618 or 237 or −535
Emperor Anastasius I (491–518)

Year 491 (CDXCI) was a common year starting on Tuesday (link will display the full calendar) of the Julian calendar. At the time, it was known as the Year of the Consulship of Olybrius without colleague (or, less frequently, year 1244 Ab urbe condita). The denomination 491 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.