The Megala Erga (Ancient Greek: Μέγαλα Ἔργα), or Great Works, is a now fragmentary didactic poem that was attributed to the Greek oral poet Hesiod during antiquity. Only two brief direct quotations can be attributed to the work with certainty, but it was likely similar to the Hesiodic Works and Days, with the "Megala", "great", of the title implying that it was longer than the extant poem. As such, the Megala Erga would appear to have the same relation to the Works and Days as does the Megalai Ehoiai to the Catalogue of Women.