The Glass Mountain is a 1949 black and white British romantic film drama directed by Henry Cass. It starred Michael Denison, Dulcie Gray and Valentina Cortese. The film was a popular success of its day, and was re-released in the UK in 1950 and 1953. It features acclaimed classical vocalists Elena Rizzieri as herself and Tito Gobbi as himself, with the orchestra and chorus of the Venice Opera House. The theme music by Nino Rota is memorable, and was also a contemporary hit. It was mainly filmed on location in the Dolomites and at Venice's La Fenice Opera House. Co-producer Joseph Janni also co-produced another film shot in Italy, the comedy Honeymoon Deferred, in 1951.

The Guardian wrote, "most reference books now deride the film, but at a time when Britain was emerging from the war into a period of grey austerity, The Glass Mountain and movies like it were a popular tonic. Set in the beautiful Dolomite mountains, with graceful performers and a nostalgically slow pace, it was one of the most successful British films to that date. The part of the composer was taken by Denison, with whom (Dulcie) Gray starred on stage and screen so many times that the Denisons became one of the "royal families" of the British entertainment scene."

A tale from peasant folklore concerns a mountain made of glass and a man's attempts to climb it, to win the love of a princess. For each step he takes, he slides back two steps; so, cleverly, he turns about and climbs it backwards, gaining double elevation with each downward step.