Year 8 (VIII) was a leap year starting on Sunday (link will display the full calendar) of the Julian calendar. In the Roman Empire, it was known as the Year of the Consulship of Camillus and Quinctilianus (or, less frequently, 761 Ab urbe condita). The denomination 8 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.
- August 3 – Roman general Tiberius defeats the Illyrians in Dalmatia on the River Bathinus, but the Great Illyrian Revolt continues.
- Vipsania Julia is exiled. Lucius Aemilius Paullus and his family are disgraced. Augustus breaks off the engagement of Claudius to Paullus' daughter Aemilia Lepida. An effort is made to betrothe Claudius to Livia Medullina.
- Marcus Furius Camillus, Sextus Nonius Quinctilianus, and Lucius Apronius become Roman consuls.
- Roman poet Ovid is banished from Rome and exiled to the Black Sea near Tomis (present-day Constanța).
- Start of Chushi era of the Chinese Han dynasty.
- In China, Wang Mang crushes a rebellion by Chai I, and on the winter solstice (which has been dated January 10 of the following year) officially assumes the title emperor, establishing the short-lived Xin dynasty.
- After completing Metamorphoses, Ovid begins the Fasti (Festivals), 6 books that detail the first 6 months of the year and provide valuable insights into the Roman Calendar.