The green card is a document affirming the status of a person as a permanent resident of the United States. Green card may also refer to: Sports Green card, in Association football, to signal permission to enter the field of play or, in the Italian leagues, fair play Green card, a warning card against further infractions by a field hockey player Green card, a warning card against further infractions by a Pride Fighting Championships competitor Other Green Card (film), a 1990 romantic comedy film Green card marriage, when two people get married to enable them to gain permanent residence in the US The Green card system: the European International Motor Insurance Card System, also based on a green card Green card (IBM/360), the shorthand "bible" for programmers during the late 1960s and 1970s "Green Card", a song by Oh Land from the album Wish Bone GreenCard, a smartcard ticketing system used by Metro Tasmania