Sextus Julius Major was a Roman senator active during the first half of the second century, and who held several positions in the service of the emperor.
Ronald Syme notes his ancestors included Polemon I the king of Pontus and Antonia Pythodoris.
The earliest office known for him is legatus legionis or commander of Legio III Augusta, which was stationed at Lambaesis in Numidia (which Syme notes "normally carried designation to a consulship") in 125 and 126.
[4] He was married to Julia Antonia Eurydice, a wealthy aristocratic woman known from seven inscriptions at Nysa on the Maeander relating to a series of statues of the imperial family of Marcus Aurelius and Lucius Verus, which were erected per the directions in her will.
These statues have been dated between the years 148 and 150, and because they omit his name suggest Julius Major was dead by then.