0s BC is usually considered the last decade of the 1st century BC and the 1st millennium BC. However, like the 0s, the number of years in the 0s BC is not always clearly defined. Note that there is no year zero (0) in either the proleptic Gregorian calendar or Julian calendar. Hence 1 BC is followed by the year AD 1.

AD 1 is the first year of the Anno Domini era (also known as the Common Era). In 525 (the consulship of Probus Junior Flavius Probus), a Christian monk named Dionysius Exiguus stated that the incarnation of Jesus occurred 525 years earlier. Whether Dionysius regarded "incarnation" as Jesus' birth or conception, and whether Dionysius placed it in 1 BC or AD 1 are debated by modern scholars. Nevertheless, these same scholars believe Jesus was actually born a few years earlier, during this decade.

This article concerns the period 9 BC – 1 BC, the last nine years before the Anno Domini era, not the last ten years.

Contents: 9 BC 8 BC 7 BC 6 BC 5 BC 4 BC 3 BC 2 BC 1 BC

Los Compadres was a famous Cuban trova duo formed by Lorenzo Hierrezuelo in 1947. At the time Lorenzo had a singing duo with María Teresa Vera, and this partnership continued alongside the new venture. His first partner in Los Compadres was Compay Segundo (a famous trova singer and guitarist in his own right), who became the second voice and tres player of the duo. Later, when Compay Segundo moved on, Lorenzo formed up with his brother, Rey Caney, keeping the same name for the duo. Both partnerships made many recordings and toured widely in Latin America and the U.S.A.