Ignatius Zakka I Iwas (; ; ', born Sanharib Iwas, 21 April 1931 – 21 March 2014) was the 122nd reigning Syriac Orthodox Patriarch of Antioch and All the East and, as such, Supreme Head of the Universal Syriac Orthodox Church. Also known by his traditional episcopal name, Severios, he was enthroned as patriarch on 14 September 1980 in St. George's Patriarchal Cathedral in Damascus. He succeeded Ignatius Ya`qub III. As is traditional for the head of the church, Mor Severios adopted the name Ignatius.