AVELLA (anc. ABELLA), city of Campania, Italy, province of Avellino, 23m. N.E. of Naples by rail. Population (1931) 4,082. It is in fertile territory and its nuts and fruit were renowned in Roman days. About 2m. N.E. 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 (2nd century B.c.). It has remains of the walls of the citadel and of an amphitheatre, and lay on the road from Nola, perhaps joined here by a branch from Suessula.