The gens Aetia was an obscure ancient Roman gente.^[1]

• Quintus Aetius Victor, man mentioned on a loculite tablet^[1]
• Quintus Aetius Appollonius, man mentioned on a loculite tablet^[1]
• Aetius, supposed consul and son-in-law of emperor Septimius Severus mentioned in the Historia Augusta

• Aëtius of Antioch, 4th-century theologian and founder of Anomoeanism
• Aetius, 5th-century magister militum
• Aetius, 5th-century praetorian prefect
• Aëtius of Amida, 6th-century physician and medical writer

• List of Roman gentes
• Family in ancient Rome
• Ateia gens