| Acacius | |
| Native Name: | Ἀκάκιος |
| Native Name Lang: | el |
| Allegiance: | Byzantine |
| Rank: | Comes rei militaris or tribunus |
Acacius (Greek, Modern (1453-);: {{lang|grc|Ἀκάκιος) was a Byzantine military officer, active in Alexandria during the reign of Justinian I (r. 527–565).
Acacius was a native of Amida, and Zacharias Rhetor calls him "Bar Eshkhofo", which seems to mean "son of a cobbler.[1] Zacharias further reports that after the deposition of Patriarch Paul of Alexandria and his replacement by Zoilus (in 539/540), Acacius was the military officer tasked to protect Zoilus from the hostile population of Alexandria.[2] Acacius was probably a professional soldier, but seems to have held a lower position, perhaps a comes rei militaris or a tribunus (cavalry regimental commander).[1]