Aetia is a work of ancient Greek literature attributed to the poet Callimachus. It is a collection of elegiac poems that explore the origins and myths associated with various places, customs, and deities in the ancient world. The title translates to "Causes," reflecting its focus on explaining the reasons behind certain traditions and stories. The poems in Aetia are notable for their intricate style and rich imagery. They often blend historical facts with mythological elements, providing insights into the cultural and religious practices of ancient Greece. This work is considered significant in the development of Hellenistic poetry and has influenced later literary traditions.