Under the Volcano is a 1984 drama film directed by John Huston and starring Albert Finney, Jacqueline Bisset, and Anthony Andrews, based on Malcolm Lowry's semi-autobiographical 1947 novel.

The film follows the last 24 hours in the life of Geoffrey Firmin (Finney), an alcoholic British former consul in the small Mexican town of Quauhnahuac on the Day of the Dead in 1938.

On the Day of the Dead in 1938, Firmin, an alcoholic former British consul to Mexico, despondent from the yearlong absence of his wife Yvonne, wanders the streets of Quauhnahuac in a stupor, observing the festivities and crashing a Red Cross charity ball.

Guy Gallo, a novice playwright[5] who had written two academic papers on Malcolm Lowry at Yale University, began to write a screenplay.

[6] Albert Finney was cast in the lead role of Geoffrey Firmin, Jacqueline Bisset as his wife Yvonne, and Anthony Andrews as his half-brother Hugh.