Hypermestra (or Hypermnestra) was the eldest of the fifty daughters of Danaüs, king of Argos, and the only one not to kill her bridegroom (Lynceus was the lucky man). Hypermestra was also the name of the daughter of Thestius who became the wife of Oi'cles and the mother of Amphiaraüs.

The name actually means 'superbride', implying an excess of wooing (or whatever else one wishes to call it), from hyper, 'over', 'above' and mnesteira, 'bride' (or mnesteuo, 'to woo', 'court'). This would seem to be an appropriate name, especially for the daughter of the prolific Danaüs.