The giant electric ray or Cortez electric ray, Narcine entemedor, is a species of numbfish, family Narcinidae, native to the eastern Pacific Ocean from the Gulf of California to Panama. It is found in shallow water on sandy bottoms and sometimes adjacent to reefs. This species is closely related to the lesser electric ray (Narcine bancroftii) from the western Atlantic, and may represent the same species. The specific epithet entemedor seems to be the Spanish equivalent of "intimidator".