Vigilantia (Greek: Βιγιλαντία, born c. 490) was a sister of Byzantine emperor Justinian I (r. 527–565), and mother to his successor Justin II (r. 565–574).
Evagrius Scholasticus, John Malalas, the Chronicon Paschale, the Suda, Joannes Zonaras and the Patria of Constantinople consider them Thraco-Romans.
Its authenticity however was doubtful, and Konstantin Josef Jireček considered this manuscript to be the work of Ivan Tomko Marnavich (1579–1639), archdeacon of Agram (Zagreb).
Both Vigilantia and her daughter-in-law Sophia, are called "divae", Latin for "divine ones, goddesses", and sources of the poet's inspiration, standing in for the Muses in that respect.
The Byzantinist Lynda Garland suggests that both Sophia and Vigilantia were Corippus' actual sources on various events, including "behind the scenes" activities.