Nossis was a Hellenistic Greek poet from Epizephyrian Locris in southern Italy. She seems to have been active in the early third century BCE, as she wrote an epitaph for the Hellenistic dramatist Rhinthon. She primarily wrote epigrams for religious dedications and epitaphs.
Her epigrams were inspired by Sappho, whom she claims to rival. She may have also been influenced by Erinna and Anyte. Antipater of Thessalonica included her in his canon of nine female poets.