Acerra is a town and comune of Campania, southern Italy, in the Province of Naples, about 20 km northeast of the provincial capital in Naples. It is part of the Agro Acerrano plain. Acerra is one of the most ancient cities of the region, probably founded by the Osci with the name of Akeru (Latin: Acerrae). It was the first Roman city that was granted the status of civitas sine suffragio.
- Acerra Cathedral, originally built over an ancient temple of Hercules and remade in the 19th century. It houses some Baroque canvasses from the 17th century. Annexed is the Bishop's Palace.
- Church of Corpus Domini (16th century).
- Church of Annunziata (15th century), with a 12th century crucifix and a 15th century Annunciation attributed to Dello Delli.
- Church of San Pietro (16th-17th centuries)
- Baronal Castle.
- Archaeological area of Suessula.