1917 in film was a particularly fruitful year for the art form, and is often cited as one of the years in the decade which contributed to the medium the most, along with 1913. Secondarily the year saw a limited global embrace of narrative film-making and featured innovative techniques such as continuity cutting. Primarily, the year is an American landmark, as 1917 is the first year where the narrative and visual style is typified as "Classical Hollywood".

This is a list of notable events in music that took place in the year 1920.