"Perfidia" (Spanish for "perfidy", meaning faithlessness, treachery or betrayal) is a 1939 Spanish-language song written by Mexican composer and arranger Alberto Domínguez (1906–1975).

The song is sung from the perspective of a man whose lover has left him.

The song has also been recorded in English (with lyrics by Milton Leeds) and as an instrumental.

[1] "Perfidia" has been recorded by many artists, including: