Nereida \n(e)-rei-da\ as a girl's name is pronounced ne-RAY-dah. It is of Spanish and Greek origin, and the meaning of Nereida is "sea nymph". Greek mythology: the Nereids were deities of the seas, mermaids. May also be used in reference to Saint Nerus (first or second century), a Roman soldier who became a Christian. Nerida is an Australian aboriginal name for water lily or blossom. It was in common usage in Queensland Australia in the 1940s to 1950s.

Nereida has 3 variant forms: Nereyda, Nerida and Nireida.

For more information, see also the related name Nerissa.

Baby names that sound like Nereida are Narda, Nerit and Norda.