In Greek mythology, Hesiod describes Pandora as the source of women’s “tribe and race.” This wording appears in the Theogony, where Pandora’s creation follows the conflict between Zeus and Prometheus.
Hesiod’s account is strongly shaped by the gender assumptions of archaic Greek society. In the Theogony, the arrival of women is connected with marriage, household labor, and the continuation of human generations, while the poem presents Pandora as a consequence of Prometheus’s defiance.
Hesiod also tells a related but fuller Pandora story in Works and Days. The two poems overlap in their treatment of Zeus, Prometheus, and Pandora, but they emphasize different details and should not be treated as one identical passage.
The phrase is sometimes paraphrased as saying Pandora was the first woman. That is broadly consistent with the mythic tradition, but the question asks specifically about the poet whose surviving texts connect her with the origin of women as a group.