Aulerci is a generic name for some of the Celtic peoples of ancient Gaul, which included several Celtic tribes. Julius Caesar (B. G. ii. 34) names the Aulerci with the Veneti and the other maritime states. In B. G. vii. 75, he enumerates, among the clients of the Aedui, the Aulerci Brannovices and Brannovii, as the common text stands; but the names in this chapter of Caesar are corrupt, and Brannovii does not appear to be genuine. If the name Aulerci Brannovices is genuine in vii. 75, this branch of the Aulerci, which was dependent on the Aedui, must be distinguished from those Aulerci who were situated between the Lower Seine and the Loire, and separated from the Aedui by the Senones, Carnutes, and Bituriges Cubi.
Again, in vii. 75, Caesar mentions the Aulerci Cenomani and the Aulerci Eburovices. In B. G.vii. 75 Caesar mentions the maritime states (ii. 34) under the name of the Armoric states; but his list does not agree with the list in ii. 34, and it does not contain the Aulerci as the Aulerci were not regarded a maritime tribe. Caesar (iii. 17) mentions a tribe of Diablintes or Diablintres, to whom Ptolemy gives the generic name of Aulerci. It seems, then, that Aulerci was a general name under which several tribes were included.