Yakobo wa Nisibi (alifariki Nusaybin, leo nchini Uturuki, 338) alikuwa askofu wa mji huo kuanzia mwaka 309 hadi kifo chake. Alianzisha shule ya Nisibi, alikuwa kiongozi wa kiroho wa Efrem wa Syria na alishiriki Mtaguso wa kwanza wa Nisea (325). Tangu kale anaheshimiwa na Wakatoliki, Waorthodoksi na Waorthodoksi wa Mashariki kama mtakatifu. Sikukuu yake ni tarehe 12 Mei au 15 Julai. Watakatifu wa Agano la Kale Orodha ya Watakatifu Wakristo Orodha ya Watakatifu wa Afrika Orodha ya Watakatifu Wafransisko http://www.santiebeati.it/dettaglio/62760 Martyrologium Romanum Albert, Francis X.E. (1907). "Aphraates", The Catholic Encyclopedia. New York: Robert Appleton Company.  Brown, Peter (1971). "The Rise and Function of the Holy Man in Late Antiquity", The Journal of Roman Studies, Vol. 61. Society for the Promotion of Roman Studies, 80–101.  Bundy, David (2000). "Vision for the City: Nisibis in Ephrem's Hymns on Nicomedia", Religions of Late Antiquity in Practice. Princeton University Press, 189–206.  Bundy, David (2013). "Jacob of Nisibis", Encyclopedia of Early Christianity, ed. Everett Ferguson.