663 BC

Millennium: 1st millennium BC
Centuries:
Decades:
Years:
663 BC in various calendars
Gregorian calendar663 BC
DCLXIII BC
Ab urbe condita91
Ancient Egypt eraXXVI dynasty, 2
- PharaohPsamtik I, 2
Ancient Greek era29th Olympiad, year 2
Assyrian calendar4088
Balinese saka calendarN/A
Bengali calendar−1255
Berber calendar288
Buddhist calendar−118
Burmese calendar−1300
Byzantine calendar4846–4847
Chinese calendar丁巳年 (Fire Snake)
2035 or 1828
    — to —
戊午年 (Earth Horse)
2036 or 1829
Coptic calendar−946 – −945
Discordian calendar504
Ethiopian calendar−670 – −669
Hebrew calendar3098–3099
Hindu calendars
 - Vikram Samvat−606 – −605
 - Shaka SamvatN/A
 - Kali Yuga2438–2439
Holocene calendar9338
Iranian calendar1284 BP – 1283 BP
Islamic calendar1323 BH – 1322 BH
Javanese calendarN/A
Julian calendarN/A
Korean calendar1671
Minguo calendar2574 before ROC
民前2574年
Nanakshahi calendar−2130
Thai solar calendar−120 – −119
Tibetan calendar阴火蛇年
(female Fire-Snake)
−536 or −917 or −1689
    — to —
阳土马年
(male Earth-Horse)
−535 or −916 or −1688

The year 663 BC was a year of the pre-Julian Roman calendar. In the Roman Empire, it was known as year 91 Ab urbe condita . The denomination 663 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.