The FBI, formally the Federal Bureau of Investigation, was an American governmental department that conducted criminal investigations.
FBI agent Joe Manco once interrogated Ace, but she used the Seventh Doctor's CIA connections to convince him that they were on the same side. (PROSE: First Frontier)
In 1969, Richard Nixon hired former FBI agent Canton Everett Delaware III to investigate mysterious telephone calls he was receiving. He chose him based on his FBI training. (TV: The Impossible Astronaut)
During the 1980s, two FBI agents were sent to the Antarctic after two Americans tried to kill each other at a base there. (AUDIO: Snow Blind)
The Doctor once carried an FBI badge. (PROSE: Atom Bomb Blues)
The FBI prevented a group of cyber-terrorists from using the Armageddon virus to bring down the international banking network. (TV: The Lost Boy)
Delphi once changed the FBI records to suit her plans. (PROSE: Beautiful Chaos)
In 2011, Jack Harkness posed as a member of the FBI to gain entry to a medical experiment related to Miracle Day. (TV: The New World)