Yasin Qasem Muhammad Ismail (Arabic: ياسين قاسم محمد إسماعيلي‎‎) is a Yemeni held in extrajudicial detention in the United States Guantanamo Bay detainment camps, in Cuba.[1] His Guantanamo Internment Serial Number is 522. Joint Task Force Guantanamo counter-terrorism analysts estimate he was born in 1979, in Ibb, Yemen.