Adolius (Greek: 'Αδόλιος, d. 543) was a Byzantine silentiarius and military officer, active in the reign of Justinian I (r. 527–565). He was a son of Acacius, proconsul of Armenia Prima (First Armenia). He is better known for his activities in the early stages of the Lazic War. The main source about him is Procopius.
Procopius considers Acacius and his son Adolius to have been natives of Roman Armenia. He mentions that Adolius held the rank of silentiarius, though not mentioning the circumstances of his appointment.: "Adolius, the son of Acacius ... This Adolius was an Armenian by birth, and he always served the emperor while in the palace as privy counsellor (those who enjoy this honour are called by the Romans "silentiarii"), but at that time he was commander of some Armenians. And these men did as directed."
Acacius proved highly unpopular with the population of his province, gaining a reputation for cruelty and greed. He was assassinated in 538/539. A passage of Procopius names Artabanes as the killer. Adolius is mentioned urging Justinian I to act against the Armenian rebels responsible for the murder. He is implied to be very critical of Sittas, the general tasked with facing the revolt, and of Sittas' attempts to negotiate peace. The relative passages report: "So he [Sittas] came to Armenia, but at first he entered upon the war reluctantly and exerted himself to calm the people and to restore the population to their former habitations, promising to persuade the emperor to remit to them the payment of the new tax. But since the emperor kept assailing him with frequent reproaches for his hesitation, led on by the slanders of Adolius, the son of Acacius, Sittas at last made his preparations for the conflict."