Blue Card may refer to:Blue card, a penalty card used in many sports Blue card, a permit for handgun-purchasing issued in Rhode Island The Blue Card, a non-profit organization dedicated to providing financial assistance to destitute Holocaust survivors in the United States Blue card (Australia), a system used in Queensland as a prevention and monitoring system for people working with children and young people Blue Card, an approved EU-wide work permit Blue Card (Turkey), a card provided to former Turkish citizens upon voluntary renunciation of the citizenship Blue card index system, a matrix of names used by Ulster loyalist Brian Nelson