When Pigs Fly

When Pigs Fly may refer to:


 * When pigs fly, a figure of speech to express impossibility
 * When Pigs Fly (Vollmer album), 1990
 * When Pigs Fly: Songs You Never Thought You'd Hear (Cevin Soling album), a compilation album of covers by various artists, 2002
 * When Pigs Fly (The Chicharones album), 2005
 * When Pigs Fly (musical), a 1996 musical revue
 * When Pigs Fly (film), a 1993 film directed by Sara Driver
 * When Pigs Fly Incorporated, a television production company owned by Gary Glasberg