Réveillon may refer to:
- Réveillon, a long dinner, and possibly party, held on the evenings preceding Christmas Day and New Year's Day, in Brazil, in Portugal, in France and some other French-speaking countries
Réveillon is the name of two communes in France:
- Réveillon, Marne, in the Marne département
- Réveillon, Orne, in the Orne département
Réveillon is the name of two rivers in France:
- Réveillon (Yerres), tributary of the Yerres River, crossing the Seine-et-Marne and the Val-de-Marne departments
- Réveillon (Epte), tributary of the Epte, crossing the Oise and the Eure departments
Réveillon is a surname:
- Jean-Baptiste Réveillon
- Réveillon riots
Réveillon is also:
- Le Réveillon, a play by Henri Meilhac and Ludovic Halévy which became the basis for Die Fledermaus