Julia Augusta () may refer to:
Livia (58 BC–29 AD), Julia Augusta, Augustus' third wife Agrippina the Younger (15–59 AD), Augusta, Claudius' fourth wife Julia Domna (170–217), Augusta, wife of Septimius Severus Julia Cornelia Paula, Elagabalus' first wife Aquilia Severa Augusta, Elagabalus' second and fourth wife Julia Avita Mamaea (died 235), Augusta, Severus Alexander's mother Cornelia Salonina (died 268), Augusta, Gallienus' wife Zenobia (240–?), empress of the Palmyrene Empire Helena, Constantine I's mother
See also Augusta (title)