Eulalios () was a famous Byzantine painter and mosaicist who worked during the 12th century under Manuel I.
His name was noted by several writers of 12-14th centuries who also described his works, such as Nicephorus Callistus and Nicholas Mesarites.
He created images of Pantocrator and Myrrhbearers in the now-demolished Church of the Holy Apostles in Constantinople.
Of his works, the most famed was mosaic in the dome with depiction of Christ Pantocrator.
Nicephorus Callistus' description of the painting:
Nicholas Mesarites' description of the painting: