321 BC

Millennium: 1st millennium BC
Centuries:
Decades:
Years:
321 BC in various calendars
Gregorian calendar321 BC
CCCXXI BC
Ab urbe condita433
Ancient Egypt eraXXXIII dynasty, 3
- PharaohPtolemy I Soter, 3
Ancient Greek era114th Olympiad, year 4
Assyrian calendar4430
Balinese saka calendarN/A
Bengali calendar−913
Berber calendar630
Buddhist calendar224
Burmese calendar−958
Byzantine calendar5188–5189
Chinese calendar己亥年 (Earth Pig)
2377 or 2170
    — to —
庚子年 (Metal Rat)
2378 or 2171
Coptic calendar−604 – −603
Discordian calendar846
Ethiopian calendar−328 – −327
Hebrew calendar3440–3441
Hindu calendars
 - Vikram Samvat−264 – −263
 - Shaka SamvatN/A
 - Kali Yuga2780–2781
Holocene calendar9680
Iranian calendar942 BP – 941 BP
Islamic calendar971 BH – 970 BH
Javanese calendarN/A
Julian calendarN/A
Korean calendar2013
Minguo calendar2232 before ROC
民前2232年
Nanakshahi calendar−1788
Thai solar calendar222–223
Tibetan calendar阴土猪年
(female Earth-Pig)
−194 or −575 or −1347
    — to —
阳金鼠年
(male Iron-Rat)
−193 or −574 or −1346

Year 321 BC was a year of the pre-Julian Roman calendar. At the time, it was known as the Year of the Consulship of Calvinus and Caudinus (or, less frequently, year 433 Ab urbe condita). The denomination 321 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.