Ianeira or Ianira (Ἰάνειρά) /ˌaɪ.əˈnaɪərə/ was a name attributed to three characters in Greek mythology.
Ianeira, was, according to the late 8th–early 7th century BC Greek poet Hesiod, and the probably nearly as old Homeric Hymn 2 to Demeter, one of the many Oceanid daughters of Oceanus and Tethys. According to the Homeric Hymn, she one of the "deep-bosomed daughters of Oceanus" gathering flowers with Persephone when she was abducted by Hades.Ianeira, one of the Nereids.Ianeira, possible spouse of Capaneus