Saint Diomedes of Tarsus (Diomede) (Greek: Διομήδης ό Ταρσεύς, d. between 298 and 311 AD) is venerated as a Greek Christian saint and martyr, one of the Holy Unmercenaries.

[2] One source states, "It is said that when his head was taken to the emperor, that all were blinded, and only after his body has been returned and they had prayed, was their sight restored.

1728, the day when the Russian Orthodox Church celebrates the memory of Saint Diomedes during the Nut Feast of the Saviour.

With Julian, Philip, Theodore, Eutychian (Eutykhian), Hesychius (Heyschios), Leonides, Philadelphus (Philadelphos), Menalippus (Melanippos), and Pantagapes (Parthagapa) he was martyred at an unknown date and site.

They suffered various forms of execution (burning at the stake, drowning, beheading, or crucifixion).