Avella (anc. Abella), a city of Campania, Italy, in the province of Avellino, 23 m. N.E. of Naples by rail. Pop. (1901) 4107. It is finely situated in fertile territory and its nuts (nuces Abellanae) and fruit were renowned in Roman days. About 2 m. to the north-east lies Avella Vecchia, the ancient Abella, regarded by the ancients as a Chalcidian colony. An important Oscan inscription relates to a treaty with Nola, regarding a joint temple of Hercules, attributable to the 2nd century B.C. Under the early empire it had already become a colony and had perhaps been one since the time of Sulla. It has remains of the walls of the citadel and of an amphitheatre, and lay on the road from Nola to Abellinum, which was here perhaps joined by a branch from Suessula.
See J. Beloch, Campanien (2nd ed., Breslau, 1890), 411 seq.