John Palaiologos
John Palaiologos (1288/89–1326) was a Byzantine aristocrat of the Palaiologos dynasty, the son of the general Constantine Palaiologos and grandson of Emperor Michael VIII. By 1325 he was governor of Thessalonica.
In 1326 he rebelled against his uncle, Emperor Andronikos II, and joined the Serbian king Stefan Dečanski in raiding Byzantine Macedonia as far as Serres. Offered the title of Caesar, he submitted, but fell ill and died at Skopje the same year. His daughter Maria became Dečanski's queen.