Roman emperor Titus Fulvius Iunius Macrianus (died 261), also known as Macrianus Minor to distinguish him from his father, was the son of Fulvius Macrianus. His mother was of noble birth and her name, possibly, was Iulia. He gained the imperial office, together with his brother Quietus, through the support of his father and of Ballista, Roman emperor Valerian's praefect, in 260.

He was defeated in battle in Thrace in 261 by Aureolus and he and his father lost their lives.