Nana is a novel by the French naturalist author Émile Zola. Completed in 1880, Nana is the ninth installment in the 20-volume Les Rougon-Macquart series.

The novel opens in 1867, the year of the World Fair, when Paris, thronged by a cosmopolitan elite, was la Ville Lumiere, the glittering setting-and object-of Zola's scathing denunciation of society's hypocrisy and moral corruption.

Nana tells the story of Nana Coupeau's rise from streetwalker to high-class prostitute during the last three years of the French Second Empire. Nana first appeared near the end of Zola's earlier novel Rougon-Macquart series, L'Assommoir (1877), where she is the daughter of an abusive drunk. At the conclusion of that novel, she is living in the streets and just beginning a life of prostitution.