VINDELICIA, in ancient geography, a country bounded on the S. by Raetia, on the N. by the Danube and the Vallum Hadriani, on the E. by the Oenus (Inn), on the W. by the territory of the Helvetii. It thus corresponded to the N.E. portion of Switzerland, the S.E. of Baden, and the S. of Württemberg and Bavaria. Together with the neighboring tribes it was subjugated by Tiberius in 15 B.C., and towards the end of the 1st century A.D. was made part of Raetia (q.v.). Its chief town was Augusta Vindelicorum (Augsburg). Its inhabitants were probably of Celtic origin (cf. the recurrence of Vind- in other Celtic names—Vindobona, Vindonissa); some authorities, however, regard them as German. According to Dio Cassius (liv. 22) they were an agricultural people, and later writers (e.g. Isidorus, Origines, i. 4), describe the country as very fertile.