491 BC

Millennium: 1st millennium BC
Centuries:
Decades:
Years:
491 BC in various calendars
Gregorian calendar491 BC
CDXCI BC
Ab urbe condita263
Ancient Egypt eraXXVII dynasty, 35
- PharaohDarius I of Persia, 31
Ancient Greek era72nd Olympiad, year 2
Assyrian calendar4260
Balinese saka calendarN/A
Bengali calendar−1083
Berber calendar460
Buddhist calendar54
Burmese calendar−1128
Byzantine calendar5018–5019
Chinese calendar己酉年 (Earth Rooster)
2207 or 2000
    — to —
庚戌年 (Metal Dog)
2208 or 2001
Coptic calendar−774 – −773
Discordian calendar676
Ethiopian calendar−498 – −497
Hebrew calendar3270–3271
Hindu calendars
 - Vikram Samvat−434 – −433
 - Shaka SamvatN/A
 - Kali Yuga2610–2611
Holocene calendar9510
Iranian calendar1112 BP – 1111 BP
Islamic calendar1146 BH – 1145 BH
Javanese calendarN/A
Julian calendarN/A
Korean calendar1843
Minguo calendar2402 before ROC
民前2402年
Nanakshahi calendar−1958
Thai solar calendar52–53
Tibetan calendar阴土鸡年
(female Earth-Rooster)
−364 or −745 or −1517
    — to —
阳金狗年
(male Iron-Dog)
−363 or −744 or −1516

Year 491 BC was a year of the pre-Julian Roman calendar. At the time, it was known as the Year of the Consulship of Augurinus and Atratinus (or, less frequently, year 263 Ab urbe condita). The denomination 491 BC 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.