The gens Aelia, occasionally written Ailia, was a plebeian family in Rome, which flourished from the fifth century BC until at least the third century AD, a period of nearly eight hundred years. The archaic spelling Ailia is found on coins, but must not be confused with , which is a distinct gens. The first member of the family to obtain the consulship was Publius Aelius Paetus in 337 BC. On the coins of Aelia in 224 BC, the H may stands for Hatria or Herdonia.