Saints Sergius and Bacchus (also Serge and Bacchus or Sergios kai Bakchos or Sarkis wa Bakhos), were third century Roman soldiers who are commemorated asn martyrs by the Catholic, Easter Orthodox and Oriental churches.

They were high-ranking officers of the Roman Army, but their covert Christianity was discovered when they attempted to avoid accompanying a Roman official into a pagan temple with the rest of his bodyguard. After they persisted in refusing to sacrifice to Jupiter in the company of the emperor Galerius, they were publicly humiliated by being chained and dressed in female attire and paraded around town. Galerius then sent them to Barbalissos in Mesopotamia to be tried by Antiochus, the military commander there and an old friend of Sergius. Antiochus could not convince them to give up their faith, however, and Bacchus was beaten to death. The next day Bacchus' spirit appeared to Sergius and encouraged him to remain strong so they could be together forever. Over the next days, Sergius was also brutally tortured and finally executed at Resafa, where his death was marked by miraculous happenings.