Federico Fellini cast film editor Leo Catozzo as the"man with the sack" and wanted to keep that sequence in the release print over the objections of producer Dino De Laurentiis. De Laurentiis thought the scene slowed the film down, finally had to resort to stealing the scene from the editing room. According to DeLaurentiis, about 5-7 years after its original release, Fellini rang him, and begged to get the scene back, so he could restore it. As "Cabiria" had now achieved a classic status, the producer agreed.

During the editing of this film, editor Leo Catozzo developed the CIR self-perforating adhesive tape splicer (also known as "Costruzione Incollatrici Rapide", "the Cattozzo", Guillotine-, CIRO- or ARRI Splicer) which made him rich in the 1960s and for which he won an Academy Award in 1990.

According to Federico Fellini's assistan, Dominique Delouche, actor Francois Perrier was hired so the film could get financing as a French co-production.

Won 1958 Oscar for Best Foreign Film by defeating Mother India (1957) by just 1 vote.

Was Italy's official submission for 1958's Best Foreign Language Film of the 30th Academy Awards

The Nights of Cabiria (1957)'s included on Roger Ebert's "great movies" list.

This film is part of the Criterion Collection, spine #49.

Ranked number 87 non-English-speaking film in the critics' poll conducted by the BBC in 2018.

Italian censorship visa #23742 delivered on 13 March 1957.

Federico Fellini: [vaudeville] The entire hypnotist stage act segment is among many vaudeville references in Fellini's films.

The American musical, Sweet Charity (1969) (choreograped and directed by Bob Fosse) was based upon this film. The ending used in 'Charity' (which parallels this film's ending) was deemed too 'depressing' by the studio, who demanded am upbeat ending, instead. Though it was filmed, test audiences reacted poorly, so the original - 'Cabiria-like' ending which leaves her future unanswered was restored.