亚历山大的狄奥格诺斯图斯（英语：Theognostus of Alexandria，210年－270年），古希腊神学家。为当时学术中心亚历山大城教理学校的领导人，他的宗教著作甚丰，其中的《教义要略》在公元4世纪的尼西亚会议上成为正统派论战阿里乌斯派的有力工具。
英语百科
Theognostus of Alexandria 亚历山大的狄奥格诺斯图斯
Theognostus (Greek: Θεόγνωστος; c. 210 – c. 270) was a late 3rd century Alexandrian theologian. He is known from quotes by Athanasius and Photios I of Constantinople. Philip of Side says that he presided over the school of Alexandria after Pierius (AD 265). Although a disciple of Origen of Alexandria no reference of him can be found by Eusebius or Jerome. The main textual point of reference is derived from Athanasius.