Réveillon is the name used for New Year's Eve celebrations in Brazil and Portugal, derived from the French term for the occasion.
In Portuguese-speaking contexts, Réveillon commonly refers to the New Year's Eve festivities, especially the public celebration and party surrounding midnight. In Brazil, it is strongly associated with beach gatherings, white clothing, fireworks, music, and regional traditions. Rio de Janeiro's Copacabana Réveillon is one of the most internationally visible examples.
Réveillon is also used in French, where réveillon can describe a celebratory late meal or party held on Christmas Eve or New Year's Eve. The word therefore does not identify one single ceremony worldwide. It should not be confused with Carnaval, Brazil's pre-Lenten festival, or Festa Junina, a set of June festivals. The shared term reflects linguistic and cultural connections between French and Portuguese-speaking traditions while local customs remain distinct.