Legio undecima Claudia ("Claudius' Eleventh Legion") was a legion of the Imperial Roman army. XI Claudia dates back to the two legions (the other was the XIIth) recruited by Julius Caesar to invade Gallia in 58 BC, and it existed at least until the early 5th century, guarding lower Danube in Durostorum (modern Silistra, Bulgaria). The emblem of the legion is not known; it could have been, as all of the Caesar's legions, the bull or possibly the she-wolf lactating the twins.