The Aden-Abyan Islamic Army is a militant group that operates in southern Yemen. It is a Sunni jihadist organization affiliated with al-Qaeda. The group has used several aliases over the years, including Islamic Army of Aden, Yemeni Army of Aden-Abyan, and Abyan Islamic Army. These names are often used interchangeably in reference to the group. Other possible synonyms for the Aden-Abyan Islamic Army include Sunni extremist group, al-Qaeda in the Arabian Peninsula (AQAP), Islamic radical organization, and Yemen-based terrorist group. The group has been responsible for numerous attacks on both military and civilian targets in Yemen and has been linked to several high-profile terrorist plots.