Nivôse (French pronunciation: ​[nivoz]; also Nivose) was the fourth month in the French Republican Calendar. The month was named after the Latin word nivosus, which means snowy.

Nivôse was the first month of the winter quarter (mois d'hiver). It started between 21 and 23 December. It ended between 19 and 21 January. It follows the Frimaire and precedes the Pluviôse.