- Card Games a card that has been declared wild
- Sports any of the teams, other than those that finish in first and sometimes second place, that qualify for a championship playoff
- an element that cannot be predicted or controlled
wild cardwild card
(plural wild cards)
- In card games, a card that can be assigned any value or used to substitute for any needed card.
- (sports) A competitor or team that is allowed to compete in a tournament despite not reaching the normal standards to qualify for inclusion.
- Kye Sun-Hui won an Olympic gold medal in Judo, despite being a wild card.
- (computing) a character that substitutes for other characters in regular expressions and globbing