The gens Aliena or Alliena was a plebeian family of the Roman Republic. The first member of the gens to achieve prominence was Lucius Alienus, plebeian aedile in 454 BC. However, the family then slipped into obscurity for several centuries, emerging once more in the first century BC.
The nomen Alienus may be derived from the Latin adjective, alienus, "a stranger". It was also used as a personal cognomen in the Etruscan gens Caecina. The Alieni were of great antiquity at Rome, but do not appear ever to have been a particularly large or important family.
- Lucius Alienus, plebeian aedile in 454 BC.
- Aulus Allienus, praetor in 49 BC, with Sicilia as his province, and later served as proconsul in Africa under Gaius Julius Caesar.
- Aulus Allienus, sent by Publius Cornelius Dolabella to Egypt, in order to return with four legions stationed there, in 49 BC.
This article incorporates text from a publication now in the public domain: Smith, William, ed. (1870). "article name needed". Dictionary of Greek and Roman Biography and Mythology.