| Honorific Prefix: | Saint |
| Potamon of Heraclea | |
| Residence: | Heraclea in Egypt |
| Death Place: | Egypt |
| Beatified Date: | Pre-congregation |
| Feast Day: | 18 May |
Saint Potamon of Heraclea (or Potamon of Alexandria, Potamone, Potamion; died) was a bishop of Heraclea in Egypt who was persecuted under the emperor Maximinus Daza, attended the First Council of Nicaea, then was martyred in Egypt by the Arians.His feast day is 18 May.
The Roman Martyrology of 1914 has an entry under May 18;
The monks of St Augustine's Abbey, Ramsgate wrote in their Book of Saints (1921),
The hagiographer Alban Butler (1710–1773) wrote in his Lives of the Fathers, Martyrs, and Other Principal Saints under May 18,