安条克的圣依纳爵（Saint Ignatius of Antioch），也称作「神的使役」（Theophorus），67年－110年），为后期使徒时代（Post-Apostolic Age）的基督徒领袖之一，第一个称教会为天主教会者，相传曾接受使徒传福音者若望直接的教导，正教会第三位安条克牧首（前两位分别是圣伯多禄与埃伏第乌斯Evodius）。最终被罗马帝国皇帝投入野兽的笼中而殉道，死前深感能为主殉道为荣。他在在被押往罗马殉教途中写了七封书信给小亚细亚和罗马的教会，四封写于士每拿，三封写于特罗亚。透过这七封信，我们可以看见当时教会的情形，是现今了解2世纪初基督教会的著名重要数据。

Ignatius of Antioch (Ancient Greek: Ἰγνάτιος Ἀντιοχείας, Ignátios Antiokheías) (c.35  – c.108), also known as Ignatius Theophorus (Ιγνάτιος ὁ Θεοφόρος, Ignátios ho Theophóros, lit. "the God-bearing"), Ignatius Nurono (lit. "The fire-bearer") was an Apostolic Father, student of the Apostle John, and the third bishop of Antioch. En route to Rome, where he met his martyrdom by being fed to wild beasts, he wrote a series of letters which have been preserved as an example of very early Christian theology. Important topics addressed in these letters include ecclesiology, the sacraments, and the role of bishops.