Centum Prata is the name of a Roman vicus on the eastern shore of Lake Zurich , whose remains are located in Kempraten (to which the vicus lends its name) in the municipality Rapperswil-Jona, Canton of St. Gallen , Switzerland. Centum Prata is the most important archaeological site from the Gallo-Roman era in the canton of St. Gallen.

In the Gallo-Roman era the former vicus was named Centoprato (lit. '100 meadows'), and in 863 it was mentioned as Centiprata from which Kempraten is derived. Unclear due to the naming of the settlement is a Celtic origin respectively a former Celtic settlement.