Night World is a 1932 American pre-Code drama film featuring Lew Ayres, Mae Clarke, and Boris Karloff.

The film was directed by Hobart Henley and features an early Busby Berkeley music number, "Who's Your Little Who-Zis".

On a cold winter's night outside Happy's Nightclub, Irish-American police officer Ryan (Robert Emmett O'Connor) chats with African-American doorman Tim Washington (Clarence Muse), who is worried about his critically ill wife.

Inside, club owner Happy (Boris Karloff) is arguing with his shrewish but glamorous wife Jill (Dorothy Revier) and welcoming frequent customers Ed Powell (George Raft), a crooked gambler, and Michael Rand (Lew Ayres).

Rand is a wealthy college boy who watched his mother kill his father after catching him with another woman, a case widely covered by the tabloids.

Backstage, gambler Powell asks chorus girl Ruth Taylor (Mae Clarke) for a date and, after losing an impromptu bet, she agrees to go out with him.

After the floor show, all the chorus girls are asked to stay late by their cruel dance master, Klauss (Russell Hopton), who is secretly having an affair with Happy's wife Jill.

When they turn their guns towards Michael and Ruth, they are suddenly shot dead by the returning police officer Ryan.