Year 11 (XI) was a common year starting on Thursday (link will display the full calendar) of the Julian calendar. At the time, it was known as the Year of the Consulship of Lepidus and Taurus (or, less frequently, year 764 Ab urbe condita). The denomination 11 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. The Year XI (eleven) is also a year in the French Revolutionary Calendar.
- Germania Inferior and the Rhine are secured by Germanicus.
- Emperor Augustus abandons his plan to create a defensive border at the Elbe, in order to reinforce the Roman defenses along the Rhine and the Danube.
- An edict is issued effecting an empire-wide ban on divinatory practices especially astrology. The edict requires any consultation between a customer and a practitioner to be conducted with at least one third party witness present and bans inquiry into anyone's death.
- Artabanus III of the Arsacid Dynasty becomes ruler of Parthia.
- In India, Satakarni begins his reign as Emperor of the Andhra Empire (11–29).
- Marcus Antistius Labeo, prominent Roman jurist