321 BC

321 BC in various calendars
Gregorian calendar	321 BC; CCCXXI BC
Ab urbe condita	433
Ancient Egypt era	XXXIII dynasty, 3
- Pharaoh	Ptolemy I Soter, 3
Ancient Greek era	114th Olympiad, year 4
Assyrian calendar	4430
Balinese saka calendar	N/A
Bengali calendar	−913
Berber calendar	630
Buddhist calendar	224
Burmese calendar	−958
Byzantine calendar	5188–5189
Chinese calendar	己亥年 (Earth Pig); 2377 or 2170; — to —; 庚子年 (Metal Rat); 2378 or 2171
Coptic calendar	−604 – −603
Discordian calendar	846
Ethiopian calendar	−328 – −327
Hebrew calendar	3440–3441
Hindu calendars
- Vikram Samvat	−264 – −263
- Shaka Samvat	N/A
- Kali Yuga	2780–2781
Holocene calendar	9680
Iranian calendar	942 BP – 941 BP
Islamic calendar	971 BH – 970 BH
Javanese calendar	N/A
Julian calendar	N/A
Korean calendar	2013
Minguo calendar	2232 before ROC; 民前2232年
Nanakshahi calendar	−1788
Thai solar calendar	222–223
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

Millennium:	1st millennium BC
Centuries:	5th century BC; 4th century BC ; 3rd century BC;
Decades:	340s BC; 330s BC; 320s BC ; 310s BC; 300s BC;
Years:	324 BC; 323 BC; 322 BC; 321 BC ; 320 BC; 319 BC; 318 BC;

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.

Gregorian calendar	321 BC CCCXXI BC
Ab urbe condita	433
Ancient Egypt era	XXXIII dynasty, 3
- Pharaoh	Ptolemy I Soter, 3
Ancient Greek era	114th Olympiad, year 4
Assyrian calendar	4430
Balinese saka calendar	N/A
Bengali calendar	−913
Berber calendar	630
Buddhist calendar	224
Burmese calendar	−958
Byzantine calendar	5188–5189
Chinese calendar	己亥年 (Earth Pig) 2377 or 2170 — to — 庚子年 (Metal Rat) 2378 or 2171
Coptic calendar	−604 – −603
Discordian calendar	846
Ethiopian calendar	−328 – −327
Hebrew calendar	3440–3441
Hindu calendars
- Vikram Samvat	−264 – −263
- Shaka Samvat	N/A
- Kali Yuga	2780–2781
Holocene calendar	9680
Iranian calendar	942 BP – 941 BP
Islamic calendar	971 BH – 970 BH
Javanese calendar	N/A
Julian calendar	N/A
Korean calendar	2013
Minguo calendar	2232 before ROC 民前2232年
Nanakshahi calendar	−1788
Thai solar calendar	222–223
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