|Millennium:||1st millennium BC|
|Centuries:||2nd century BC – 1st century BC – 1st century|
|Decades:||30s BC 20s BC 10s BC – 0s BC – 0s 10s 20s|
|Years:||9 BC 8 BC 7 BC – 6 BC – 5 BC 4 BC 3 BC|
|6 BC by topic|
|Gregorian calendar||6 BC|
|Ab urbe condita||748|
|Ancient Greek era||193rd Olympiad, year 3|
|Chinese calendar||甲寅年 (Wood Tiger)
2691 or 2631
— to —
乙卯年 (Wood Rabbit)
2692 or 2632
|Coptic calendar||−289 – −288|
|Ethiopian calendar||−13 – −12|
|- Vikram Samvat||51–52|
|- Shaka Samvat||N/A|
|- Kali Yuga||3096–3097|
|Iranian calendar||627 BP – 626 BP|
|Islamic calendar||646 BH – 645 BH|
|Julian calendar||6 BC|
|Minguo calendar||1917 before ROC
|Seleucid era||306/307 AG|
|Thai solar calendar||537–538|
|Wikimedia Commons has media related to 6 BC.|
Year 6 BC was a common year starting on Sunday or Monday (link will display the full calendar) of the Julian calendar (the sources differ, see leap year error for further information) and a common year starting on Friday of the Proleptic Julian calendar. At the time, it was known as the Year of the Consulship of Balbus and Vetus (or, less frequently, year 748 Ab urbe condita). The denomination 6 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.
- Emperor Augustus sent ferrets (named viverrae by Plinius) to the Balearic Islands to control the rabbit plagues.
- Tiberius Claudius Nero is sent to Armenia, then retires to Rhodes.
- Consort Ban, Chinese concubine of Emperor Cheng of Han, also a female poet and scholar (b. 48 BC)
- Consort Feng Yuan (b. c. 48 BC)
- Liu Xiang, Chinese scholar who edited the Shan Hai Jing and compiled the Lienü zhuan, also father of Liu Xin (b. 77 BC)
- Spears, Tom (2005-12-04). "Star of Wonder". Ottawa Citizen. p. A7. "Michael Molnar announced 10 years ago his conclusion that the Star of Bethlehem was in fact a double eclipse of Jupiter in a rare astrological conjunction that occurred in Aries on March 20, 6 BC, and again on April 17, 6 BC. ... Mr. Molnar believes that Roman astrologers would have interpreted the double-eclipse as signifying the birth of a divine king in Judea." However, astronomical software such as Stellarium shows that on March 20, the occultation of Jupiter by the Moon could not be seen from Rome, as the Moon passed by the planet without obscuring it. Furthermore, the event on April 17 began when Jupiter was 38 degrees above the horizon, at 2pm, i.e. in daylight, so it is extremely unlikely that this event would have been seen either.