545 BC

Calendar year

Millennium:	1st millennium BC
Centuries:	7th century BC 6th century BC 5th century BC
Decades:	560s BC 550s BC 540s BC 530s BC 520s BC
Years:	548 BC 547 BC 546 BC 545 BC 544 BC 543 BC 542 BC

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545 BC by topic
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545 BC in various calendars
Gregorian calendar	545 BC DXLV BC
Ab urbe condita	209
Ancient Egypt era	XXVI dynasty, 120
- Pharaoh	Amasis II, 26
Ancient Greek era	58th Olympiad, year 4
Assyrian calendar	4206
Balinese saka calendar	N/A
Bengali calendar	−1137
Berber calendar	406
Buddhist calendar	0
Burmese calendar	−1182
Byzantine calendar	4964–4965
Chinese calendar	乙卯年 (Wood Rabbit) 2153 or 1946 — to — 丙辰年 (Fire Dragon) 2154 or 1947
Coptic calendar	−828 – −827
Discordian calendar	622
Ethiopian calendar	−552 – −551
Hebrew calendar	3216–3217
Hindu calendars
- Vikram Samvat	−488 – −487
- Shaka Samvat	N/A
- Kali Yuga	2556–2557
Holocene calendar	9456
Iranian calendar	1166 BP – 1165 BP
Islamic calendar	1202 BH – 1201 BH
Javanese calendar	N/A
Julian calendar	N/A
Korean calendar	1789
Minguo calendar	2456 before ROC 民前2456年
Nanakshahi calendar	−2012
Thai solar calendar	−2 – −1
Tibetan calendar	阴木兔年 (female Wood-Rabbit) −418 or −799 or −1571 — to — 阳火龙年 (male Fire-Dragon) −417 or −798 or −1570

The year 545 BC was a year of the pre-Julian Roman calendar. In the Roman Empire, it was known as year 209 Ab urbe condita. The denomination 545 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.

In the Buddhist calendar, it corresponds to the year 0, traditionally the year when the Buddha reached parinirvana. However, different traditions disagree about the actual year 0, with many placing it in the following year 544 BC instead.