Ro (Ferrarese: ) is a comune (municipality) in the Province of Ferrara in the Italian region Emilia-Romagna, located about northeast of Bologna and about northeast of Ferrara. As of 31 December 2004, it had a population of 3,663 and an area of .
The municipality of Ro contains the frazioni (subdivisions, mainly villages and hamlets) Alberone, Guarda, Ruina, and Zocca.
Ro borders the following municipalities: Berra, Canaro, Copparo, Crespino, Ferrara, Guarda Veneta, Polesella.