57 BC

Years
Millennium
1st millennium BC
Centuries
2nd century BC 1st century BC 1st century
Decades
70s BC 60s BC 50s BC 40s BC 30s BC
Years
60 BC 59 BC 58 BC 57 BC 56 BC 55 BC 54 BC
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57 BC by topic
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57 BC in various calendars

Gregorian calendar	57 BC LVII BC
Ab urbe condita	697
Ancient Egypt era	XXXIII dynasty, 267
- Pharaoh	Ptolemy XII Auletes, 24
Ancient Greek Olympiad (summer)	180th Olympiad, year 4
Assyrian calendar	4694
Balinese saka calendar	N/A
Bengali calendar	−650 – −649
Berber calendar	894
Buddhist calendar	488
Burmese calendar	−694
Byzantine calendar	5452–5453
Chinese calendar	癸亥年 (Water Pig) 2641 or 2434     — to — 甲子年 (Wood Rat) 2642 or 2435
Coptic calendar	−340 – −339
Discordian calendar	1110
Ethiopian calendar	−64 – −63
Hebrew calendar	3704–3705
Hindu calendars
- Vikram Samvat	0–1
- Shaka Samvat	N/A
- Kali Yuga	3044–3045
Holocene calendar	9944
Iranian calendar	678 BP – 677 BP
Islamic calendar	699 BH – 698 BH
Javanese calendar	N/A
Julian calendar	N/A
Korean calendar	2277
Minguo calendar	1968 before ROC 民前1968年
Nanakshahi calendar	−1524
Seleucid era	255/256 AG
Thai solar calendar	486–487
Tibetan calendar	ཆུ་མོ་ཕག་ལོ་ (female Water-Boar) 70 or −311 or −1083     — to — ཤིང་ཕོ་བྱི་བ་ལོ་ (male Wood-Rat) 71 or −310 or −1082

Year 57 BC was a year of the pre-Julian Roman calendar. Contemporaneously, in the Roman Republic, it was known as the Year of the Consulship of Lentulus and Metellus (or, less frequently, year 697 Ab urbe condita). The denomination 57 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.