The Godfather is a 1972 American crime film[2] directed by Francis Ford Coppola, who co-wrote the screenplay with Mario Puzo, based on Puzo's best-selling 1969 novel of the same title. The Godfather is regarded as one of the greatest and most influential films ever made, as well as a landmark of the gangster genre.
This film is very related with the novel, but it’s suggested that you read the origin before watching film.

(Source: theparkwaytheater.com/all-events/the-godfather-1972; wikipedia)