Julia Flavia, Roman daughter of Titus (died AD 91)

AD 64 (LXIV) was a leap year starting on Sunday of the Julian calendar, the 64th Year of the Anno Domini designation, the 64th year of the 1st millennium, the 64th year of the 1st century, and the 4th year of the 7th decade. At the time, it was known as the Year of the Consulship of Bassus and Crassus. The denomination AD 64 for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years.

Julia Flavia or Flavia Julia, nicknamed Julia Titi, was the daughter of Roman Emperor Titus and his first wife Arrecina Tertulla. Julia Titi gained the title Augusta at her father's accession in 79.

Titus Caesar Vespasianus was Roman emperor from 79 to 81. A member of the Flavian dynasty, Titus succeeded his father Vespasian upon his death, becoming the first Roman emperor ever to succeed his biological father.