In opera, verismo (Italian for 'realism'), from vero, meaning 'true', was a post-Romantic operatic tradition associated with Italian composers such as Pietro Mascagni, Ruggero Leoncavallo, Umberto Giordano, Francesco Cilea and Giacomo Puccini.
Verismo as an operatic genre had its origins in an Italian literary movement of the same name. This was in turn related to the international literary movement of naturalism as practised by Émile Zola and others. Like naturalism, the verismo literary movement sought to portray the world with greater realism. In so doing, Italian verismo authors such as Giovanni Verga wrote about subject matter, such as the lives of the poor, that had not generally been seen as a fit subject for literature.