Romallo () is a comune (municipality) in Trentino in the northern Italian region Trentino-Alto Adige/Südtirol, located about north of Trento. As of 31 December 2004, it had a population of 576 and an area of .
Romallo's parish church is the .
Romallo borders the municipalities of Revò, Cloz, Dambel and Sanzeno.