660 BC

660 BC in various
Minguo calendar
	2571 before ROC; 民前2571年
Nanakshahi calendar	−2127
Thai solar calendar	−117 – −116
Tibetan calendar	阳金猴年; (male Iron-Monkey); −533 or −914 or −1686; — to —; 阴金鸡年; (female Iron-Rooster); −532 or −913 or −1685

Millennium:	1st millennium BC
Centuries:	8th century BC; 7th century BC ; 6th century BC;
Decades:	680s BC; 670s BC; 660s BC ; 650s BC; 640s BC;
Years:	663 BC; 662 BC; 661 BC; 660 BC ; 659 BC; 658 BC; 657 BC;

The year 660 BC was a year of the pre-Julian Roman calendar. In the Roman Empire, it was known as year 94 Ab urbe condita . The denomination 660 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.