11 BC

Year 11 BC was either a common year starting on Monday or Tuesday or a leap year starting on Sunday, Monday or Tuesday of the Julian calendar. At the time, it was known as the Year of the Consulship of Tubero and Maximus.

 Events 
 Battle of the Lupia River is a Roman victory
 Roman fortresses are built near Bonn, Dorsten, Haltern, and Oberaden

 Deaths 

 Octavia Minor, sister of Caesar Augustus (b. 69 BC)