Hail Aziz Ahmad al Maythal is a citizen of Yemen, who was held in extrajudicial detention in the United States Guantanamo Bay detention camp, in Cuba.American intelligence analysts estimate that he was born in 1977, in , Yemen. As of August 14, 2011, Hail Aziz Ahmad al Maythal has been held at Guantanamo for eight years 10 month. Maythali was transferred to Oman on January 16, 2017.