Thid thesis concerns pre-Roman religion in Gaul, taking as its starting point Caesar's De bello Gallico. Caesar's account of the Gauls and their religious customs is compared with the accounts of Lucan, Pliny the elder and Ammianus Marcellinus. These are also compared to, and contrasted to, the archaeological evidence. There is some discussion of the nature of the common interpretations of this evidence. The concept of 'the Celts' is touched upon, since much of the relevant evidence has, in our time, been thought of as Celtic.