Didier wa Cahors (kwa Kilatini Desiderius; 580 hivi – 15 Novemba 655) alikuwa askofu wa Cahors baada ya ndugu yake Rusticus wa Cahors. Chini yake jimbo lilistawi katika miaka 630-655. Pia alianzisha monasteri chini ya kanuni ya Kolumbani. Tangu kale anaheshimiwa kama mtakatifu. Sikukuu yake huadhimishwa tarehe 15 Novemba. Watakatifu wa Agano la Kale Orodha ya Watakatifu Wakristo Orodha ya Watakatifu wa Afrika Orodha ya Watakatifu Wafransisko Lewis, Archibald R. "The Development of Southern French and Catalan Society, 718–1050", ch 1 Desiderii episcopi Cadurcensis epistolae, ed. W. Arndt, Epistolae Merowingici et Karolini aevi 1, MGH EE 3, Berlin 1892, pp. 191–214 (Latin edition). La vie de Saint Didier, évêque de Cahors (630–655), ed. R. Poupardin, Paris 1900 (Latin edition with a French introduction). Epistulae Sancti Desiderii, ed. D. Norberg, Acta Universitatis Stockholmiensis, Studia Latina Stockholmiensia 4, Uppsala 1961 (Latin edition). J.R.C. Martyn: King Sisebut and the culture of Visigothic Spain, with translations of the lives of Saint Desiderius of Vienne and Saint Masona of Mérida, Lewiston 2008.