Olympias the Deaconess was a Christian Roman noblewoman born in the late 4th century, likely in Constantinople. After being widowed only two years into her marriage to the prefect Nebridius, she rejected further marriage proposals to devote herself to religious service. She served as a deaconess and eventually became an abbess. Known for her close friendship with John Chrysostom, she used her wealth to establish charitable institutions, including an orphanage and a hospital, before living her final years in Nicomedia.