Campomarino is an Arbëreshë comune in the Province of Campobasso, in the Italian region Molise, located about 50 kilometres (31 mi) northeast of Campobasso, and about 5 kilometres (3 mi) southeast of Termoli.

The Campomarino comune includes the seaside/tourist resort of Campomarino Lido, just above sea level, and the village of Campomarino, located on a hill behind it.

Campomarino borders the following municipalities: Chieuti, Guglionesi, Portocannone, San Martino in Pensilis, Termoli.