Isis 1 June 2015, Cervera de los Montes A4 (29,7 x 21,0 cm) Ink-jet print and permanent marker on paper i Isis is a brand of detergent. ISIS refers to the Islamic State of Iraq and ash-Sham, a Salafi jihadi militant group and self-proclaimed caliphate. Tags: Isis, caliphate, detergent, terrorism 111 / 779