Fortunella is a 1958 Italian comedy film directed by Eduardo De Filippo, with script by Federico Fellini, among others.

Nanda Diotallevi, known as Fortunella, is a poor girl who lives in the Roman second-hand dealers' district, and is the lover of one of these, Peppino.

To save him she goes to prison, taking responsibility for a crime of receiving stolen goods he committed, but when she is released she learns that Peppino lives with another woman, Amelia: after a scene she leaves the treacherous man.

In the vicissitudes of her troubled existence, Fortunella is supported by an illusion, which is her reason for living: she is in fact convinced that she is the illegitimate daughter of Prince Guidobaldi, whose palace is located right in her neighborhood.

Fortunella meets one day a wandering professor, Golfiero Paganica, who promises her help after hearing her story.