John the Hunchback or John Gibbo (Greek: Ἰωάννης ὁ Κυρτός; Latin: Flavius Ioannes qui est Gibbus; fl.
In this capacity he was one of two generals of Emperor Anastasius I (r. 491–518) in the Isaurian War of 492–497, along with John the Scythian.
In 498, the year after the victory over the Isaurians, it was John who captured the last enemy leaders, Longinus of Selinus and Indes, and sent them to the Emperor.
Anastasius was very pleased with the victory, and amply rewarded his victorious generals: John the Scythian was made consul for 498, while John the Hunchback held the consulate sine collegis in 499.
According to a story passed down by Procopius of Caesarea (Anecdotes, VI.5-9), John sentenced the officer Justin to death during the Isaurian War, but following a dream, decided to spare his life.