Ramzi Mohammed Abdullah bin al-Shibh is a Yemeni citizen currently being held by the U.S. as an enemy combatant detainee at Guantanamo Bay in Cuba. He is accused of being a "key facilitator for the September 11 attacks" in 2001 in the United States.

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.