Missing is a 1982 American historical drama film directed by Costa-Gavras and starring Jack Lemmon, Sissy Spacek, Melanie Mayron, John Shea and Charles Cioffi. It is based on the true story of American journalist Charles Horman, who disappeared in the bloody aftermath of the US-backed Chilean coup of 1973 that deposed the democratically elected socialist President Salvador Allende. The film was jointly awarded the Palme d'Or (with Yol) at the 1982 Cannes Film Festival.

A lost film is a feature or short film that is no longer known to exist in any studio archives, private collections, or public archives such as the Library of Congress.