Hereheretue or Hiri-oro[2] is an atoll in French Polynesia, Pacific Ocean.

It is the northernmost island of the Duke of Gloucester Islands group, or Îles du Duc de Gloucester, a subgroup of the Tuamotu group.

The broad reef completely encloses the lagoon, so that there is no navigable passage to enter it.

The first recorded sighting by Europeans was by the Spanish expedition of Pedro Fernández de Quirós on 4 February 1606.

With the other three atolls of the Duke of Gloucester Islands they were named Cuatro Coronas (Four Crowns in Spanish).