Camp X-Ray was a temporary detention facility at the Guantanamo Bay detention camp of Joint Task Force 160 on board the United States Naval Station Guantanamo Bay. The first twenty detainees arrived at Guantanamo on 11 January 2002. It was named Camp X-Ray because various temporary camps used to house Cuban and Haitian migrants in the 80s and 90s on board the station were named using NATO phonetic alphabet. The legal status of detainees at the camp, as well as government processes for trying their cases, has been a significant source of controversy; several landmark cases have been determined by the United States Supreme Court.

The Guantanamo Bay detention camp is a United States military prison within the Guantanamo Bay Naval Base, also referred to as Gitmo, on the coast of Guantánamo Bay in Cuba. As of April 2023, of the 779 people detained there since January 2002 when the military prison first opened after the September 11 attacks, 740 had been transferred elsewhere, 30 remained there, and nine had died while in custody.