Niseti wa Trier (pia: Nicetius, Nicetus, Nicet au Nizier; Auvergne, leo nchini Ufaransa, 525 hivi - 566 hivi) alikuwa askofu muhimu zaidi wa mji huo, leo nchini Ujerumani, akieneza kazi yake hadi Konstantinopoli. Gregori wa Tours anamsifu hasa kwa mahubiri yake ya nguvu yaliyomfanya mfalme Klotari I ampeleke uhamishoni. Tangu kale anaheshimiwa na Kanisa Katoliki na Waorthodoksi kama mtakatifu. Sikukuu yake huadhimishwa tarehe 1 Oktoba . Watakatifu wa Agano la Kale Orodha ya Watakatifu Wakristo Orodha ya Watakatifu wa Afrika Orodha ya Watakatifu Wafransisko Fletcher, Richard A., The Barbarian Conversion, University of California Press, 1999, ISBN 9780520218598 Diocese of Trier at GCatholic.org. Wilhelm Gundlach: Epistolae Austrasicae 7,8, Corpus Christianorum. Series Latina 117, p416–418 & p419–423. Letters to Justinian I and Chlodoswinda, ed. Wilhelm Gundlach : Epistolae Austrasicae 7.8, Corpus Christianorum. Series Latina 117, pp 416-418 and pp 419-423. Andreas Heinz: In Nicetius. Biographic-bibliographic church encyclopedia (BBKL). Volume 6, (Bautz, Herzberg 1993), p.656-657. Hubertus Seibert : Nicetius, bishop of Trier. In: New German Biography (NDB).