Gregori wa Dekapoli (Irenopoli, Isauria, leo nchini Uturuki, kabla ya 797 - Konstantinopoli, 842 au kabla yake) alikuwa mmonaki ambaye alipata umaarufu kwa miujiza na mizunguko yake mingi. Tangu kale anaheshimiwa na Waorthodoksi na Wakatoliki kama mtakatifu. Sikukuu yake huadhimishwa tarehe 20 Novemba. Watakatifu wa Agano la Kale Orodha ya Watakatifu Wakristo Orodha ya Watakatifu wa Afrika Orodha ya Watakatifu Wafransisko http://www.santiebeati.it/dettaglio/92529 Martyrologium Romanum Great Synaxaristes: Ὁ Ὅσιος Γρηγόριος ὁ Δεκαπολίτης. 20 Νοεμβρίου. ΜΕΓΑΣ ΣΥΝΑΞΑΡΙΣΤΗΣ. Venerable Gregory Decapolite. OCA - Lives of the Saints. Retrieved: 17 September 2014. Sahas, Daniel J. (2009). "Gregory Dekapolites". In Thomas, David; Roggema, Barbara. Christian-Muslim Relations: A Bibliographical History, Volume 1 (600-900). Leiden and Boston: BRILL. pp. 614–617. ISBN 978-90-04-16975-3 . (2000) "Gregorios Dekapolites (#2486)", Prosopographie der mittelbyzantinischen Zeit: I. Abteilung (641–867), 2. Band: Georgios (#2183) – Leon (#4270) (in German). Walter de Gruyter, 96–99. ISBN 3-11-016672-0.  Venerable Gregory Decapolite. OCA - Lives of the Saints. Retrieved: 17 September 2014.