| Honorific Prefix: | Saint |
| Lazarus | |
| Titles: | Founder of Ephesus |
| Birth Date: | 972 |
| Birth Place: | (modern-day Manisa, Turkey) |
| Death Date: | 1053 |
| Death Place: | Ephesus, Roman Anatolia (modern-day Selçuk, İzmir, Turkey) |
| Venerated In: | Eastern Orthodox Church Roman Catholic Church |
| Feast Day: | November 7, July 17 |
Saint Lazaros of Mount Galesios (Lazaros ho Galēsiōtēs; – 7 November 1053) was an 11th-century Byzantine monk and stylite, who founded a monastic community at Mount Galesios near Ephesus.
Lazaros, whose secular name was Leo, was born near Magnesia to a peasant family, and his original name was Leo (Λέων). The exact date of his birth is unknown; traditionally it has been calculated at, but a reference in a manuscript (Moscow, Hist. Mus. 369/353, fol. 220) records that he died at the age of 72, hence that he was born in .
After finishing his elementary schooling, he left his home and went to Attaleia to become a monk. Later he went to the famed Lavra of Saint Sabas in Palestine, before returning to his home region. He founded three monasteries at Mount Galesios near Ephesus, while he himself became a stylite and lived in a pillar. The monks in the monastic communities Lazaros founded lived in individual cells, rather than the cenobitic monasticism of most monasteries; they were even allowed to earn their own income through practicing a handicraft.
According to a vita of Lazaros of Mount Galesios written by his disciple Gregory the Cellarer, Lazaros climbed and descended Mount Argeas (now more commonly known as Mount Erciyes) in the depths of winter while singing the Psalms, as he encountered harsh weather and even a bear and attacking dogs.[1]
Lazaros's hagiography was written by his disciple, the kellarite Gregory; and reworked by the Patriarch of Constantinople, Gregory II of Cyprus, in the late 13th century. According to the description of Alexander Kazhdan, the hagiography "has few supernatural miracles but many vignettes rich in everyday details: the young Lazaros escaped sexual seduction in the house of a girl whom he accompanied to Chonae; Lazaros's corpse, with the help of the monk Cyril, signed the diatyposis for the monks; many thefts and quarrels, travels, and visits are described. Gregory focuses on local events, while Constantinople is depicted as a remote city teeming with danger".