Egnatia Mariniana was probably the wife of Roman Emperor Valerian and mother of Emperor Gallienus.
Several coins bearing the legend DIVAE MARINIANAE date back to the beginning of the reign of Valerian and Gallienus. Given the practice of deifying the wives who died before their husbands' assumption of the Principate, it is possible that Mariniana died before AD 253.
Previously it had been assumed that Egnatius Victor Marinianus, Legatus of Arabia Petraea and Moesia Superior, was the father of Mariniana. More recently however, it has been postulated that she was the daughter of Lucius Egnatius Victor (suffect consul before AD 207) and therefore Egnatius Victor Marinianus' sister.