The Roman goddess of agriculture identified with the Greek Demeter was Ceres.
Ceres presided over grain, cultivated crops, fertility, and the harvest. She was a major Roman deity and the central figure of the Aventine Triad, worshipped alongside Liber and Libera. Her name also survives in the modern word “cereal.”
Romans increasingly connected Ceres with Demeter through interpretatio Romana, the practice of identifying foreign gods with Roman counterparts. Around 205 BC, a Greek-influenced form of Ceres’s worship was formally established in Rome, incorporating myths of Demeter and Persephone.
A common mix-up is confusing Ceres with Ops, another Roman deity associated with agricultural abundance. Ceres is the direct Roman counterpart of Demeter, while her daughter Proserpina corresponds to Persephone. Her principal festival, the Cerealia, was held in April and included public games.