Demons is a 1985 Italian supernatural horror film directed by Lamberto Bava, produced by Dario Argento, and starring Urbano Barberini and Natasha Hovey. The plot follows two female university students who, along with a number of random people, are given complimentary tickets to a mysterious movie screening, where they soon find themselves trapped in the theater with a horde of ravenous demons.

Lamberto Bava is an Italian film director. Born in Rome, Bava began working as an assistant director for his director father Mario Bava. Lamberto co-directed the 1979 television film La Venere d'Ille with his father and in 1980 directed his first solo feature film Macabre.