Quintus Fabius Maximus Rullianus (or Rullus), son of Marcus Fabius Ambustus, of the patrician Fabii of ancient Rome, was five times consul and a hero of the Samnite Wars. He was brother to Marcus Fabius Ambustus (magister equitum 322 BC). He then served as censor beginning in 304 BC. Rullianus' son was Quintus Fabius Maximus Gurges, and his grandson or great-grandson the Quintus Fabius Maximus Verrucosus, surnamed "Cunctator", of the Second Punic War. The agnomen (actually more likely an extra cognomen) "Rullus" appears to mean "uncultivated, boorish" or "beggar".