The Bird with the Crystal Plumage (Italian: L'uccello dalle piume di cristallo) is a 1970 giallo film written and directed by Dario Argento, in his directorial debut. It stars Tony Musante as an American writer in Rome who witnesses a serial killer targeting young women and tries to uncover the murderer's identity before he becomes their next victim. The cast also features Suzy Kendall, Enrico Maria Salerno, Eva Renzi, Umberto Raho and Mario Adorf.

A co-production of Italy and West Germany, The Bird with the Crystal Plumage is the first in what has been called Argento's thematic "Animal Trilogy", along with his next two gialli, The Cat o' Nine Tails (1971) and Four Flies on Grey Velvet (1972). Argento's screenplay borrows liberally from Fredric Brown's 1949 novel The Screaming Mimi, which had previously been adapted into a 1958 American film.

An international commercial and critical success on release, The Bird with the Crystal Plumage has been credited with popularizing giallo, an Italian genre of horror-thriller developed in the 1960s, and launched Argento's career as a filmmaker.