Aglaonice, Agloanike, or Aganice of Thessaly (Ancient Greek: Ἀγλαονίκη, Aglaoníkē) was a Greek astronomer of the 2nd or 1st century BC. She is mentioned in the writings of Plutarch and in the scholia to Apollonius of Rhodes as a female astronomer and as the daughter of Hegetor (or Hegemon) of Thessaly. She was regarded as a sorceress for her ability to make the Moon disappear from the sky, which has been taken to mean she could predict the time and general area where a lunar eclipse would occur.