1993 is a year in the 20th century.
- February 26: The World Trade Center is bombed by terrorists. Several people are killed and the building is damaged. Agent Marty Neill, an acquaintance of FBI agent Tom Colton, investigates the bombing for the government. (TXF: "Squeeze")
- August 13: Luke Doggett is murdered in New York City. (TXF: "Release")
- December 5: Harry Cokely is released from Macalester Penitentiary. He begins residing in Gainesville, Nevada. (TXF: "Aubrey")
- Shaineh Berkowitz has a tubal ligation, which prevents her from becoming pregnant. (TXF: "The Post-Modern Prometheus")
- Special Agent Dana Scully receives a Georgetown parking permit. (TXF: "Milagro")
- Special Agent Raymond Crouch retires from the FBI after a 21-year career. (TXF: "Millennium")