Nilo wa Sinai (pia: Nilo wa Ankara, Nilo Mzee; karne ya 4 – 430 hivi) anafikiriwa kuwa mfuasi wa Yohane Krisostomo. Baada ya kuwa meya wa jiji la Konstantinopoli, alikwenda kuishi kama mmonaki kwenye Mlima Sinai pamoja na mtoto wake Theodulo, huku mke wake na mtoto mwingine wakienda kuishi vilevile nchini Misri. Mwishoni akawa abati wa monasteri karibu na Ankara, Galatia, leo nchini Uturuki, maarufu pia kwa maandishi yake. Tangu kale anaheshimiwa na Kanisa Katoliki na Waorthodoksi kama mtakatifu. Sikukuu yake ni tarehe 12 Novemba. Watakatifu wa Agano la Kale Orodha ya Watakatifu Wakristo Orodha ya Watakatifu wa Afrika Orodha ya Watakatifu Wafransisko Nikephoros Kallistos, hist. Eccl., 14, 53, 54. Tillemont, ib., p. 405. https://www.ccel.org/ccel/wace/biodict.html?term=Nilus,%20an%20ascetic%20of%20Sinai The writings of St. Nilus of Sinai were first edited by Petrus Possinus (Paris, 1639); in 1673 Suarez published a supplement at Rome; his letters were collected by Possinus (Paris, 1657), a larger collection was made by Leo Allatius (Rome, 1668). All these editions are used in Patrologia Graeca, vol. 79. http://www.santiebeati.it/dettaglio/92745 Martyrologium Romanum Nikephoros Kallistos, Hist.