Saints who were named Donatus include: * Saint Donatus of Muenstereifel, 2nd century military martyr and a patron against lightning * Saints Donatus, Romulus, Secundian, and 86 Companions, 3rd century * Saint Donatus of Arezzo, bishop of Arezzo (?-362) (feast day: August 7) * Saint Donatus of Thmuis, 4th-century martyr and successor of the also martyred St. Phileas as bishop of Thmuis, a city of Lower Egypt in the Roman province Augustamnica Prima, suffragan of Pelusium * Saint Donatus of Euroea, otherwise Donatus of Buthrotum, bishop of Euroea (d. 387) (feast day: April 30) * Saint , hermit on Mount Jura, France (d. ca. 535, feast day August 19) * Saint Donatus of Fiesole, an Irish monk who became bishop of Fiesole in 824 (feast day October 22) * Saint Donatus of Zadar, Dalmatian