Peter Sellers and Sophia Loren recorded the novelty song "Goodness Gracious Me!" in order to promote the movie. The song became a big worldwide hit.

In 1953 Katharine Hepburn planned to film this George Bernard Shaw piece and hired Preston Sturges to pen a screenplay. Despite the fact that Sturges turned in a very funny script, the deal to make the movie, which would have co-starred Alec Guinness, fell apart.

20th Century-Fox wanted Ava Gardner for the title role.

The casting was widely condemned as racist.

At 14 minutes into the film, Epifania (Sophia Loren) climbs a bridge railing and jumps into the River Thames. That bridge was the "New" London Bridge, and it now stands. The original bridge, after being dismantled, was shipped to America, and reconstructed at Lake Havasu City, Arizona USA.

Peter Sallis was booked to appear in this film, but his role was not filmed.