Petroni wa Bologna (alifariki Bologna, Italia, 450 hivi) alikuwa askofu wa 8 wa mji huo kuanzia mwaka 431 hadi kifo chake. Kabla ya hapo alipata elimu nzuri kwa wamonaki na kuwa na cheo kikubwa katika jamii. Tangu kale anaheshimiwa na Wakatoliki na Waorthodoksi kama mtakatifu. Sikukuu yake ni tarehe 4 Oktoba. Watakatifu wa Agano la Kale Orodha ya Watakatifu Wakristo Orodha ya Watakatifu wa Afrika Orodha ya Watakatifu Wafransisko http://www.santiebeati.it/dettaglio/72750 The only certain historical information we possess concerning him is derived from a letter written by Bishop Eucherius of Lyon (died 450-455) to Valerianus (in P. L., L, 711 sqq.) and from Gennadius' De viris illustribus, XLI (ed. Czapla, Münster, 1898, p. 94). Eucherius writes that the holy Bishop Petronius was then renowned in Italy for his virtues. From Gennadius we receive more detailed information: Petronius belonged to a noble family whose members occupied high positions at the imperial Court at Milan and in the provincial administrations at the end of the fourth and the beginning of the fifth centuries.