Quietus Emperor (usurper) of the Roman Empire from 260 to 261.
Titus Fulvius Junius Quietus was a Roman usurper. He was the son of Fulvius Macrianus, also known as Macrianus Major, and the brother of fellow usurper Macrianus Minor.

Quietus, his father and his brother were in Mesopotamia in 260, when the Roman army was defeated, and Valerian was captured. With help from his father, Quietus gained the imperial office together with his brother Macrianus.

After having temporarily secured the Persian frontier, the three moved to the West to attack and eliminate Gallienus. They were defeated in autumn 261.