Athanasius of Alexandria (c. 293 – 2 May 373), also given the titles Athanasius the Great, Pope Athanasius I of Alexandria, and Athanasius the Apostolic, was a Christian theologian, bishop of Alexandria, Church Father, and a noted Egyptian leader of the fourth century.
Carpocrates of Alexandria, the founder of an early Gnostic sect from the first half of the second century.
Diophantus of Alexandria b. between 200 and 214 CE, d. between 284 and 298 CE), sometimes called "the father of algebra", an Alexandrian Greek mathematician.
Euclid of Alexandria (fl 300BC), a Greek mathematician, often referred to as the "Father of Geometry".