The gens Atilia, sometimes written Atillia, was a family at Rome, which had both patrician and plebeian branches. The first member of this gens who obtained the consulship was Marcus Atilius Regulus, in 335 BC. The Atilii continued to hold the highest offices of the state throughout the history of the Republic, and well into imperial times.
The Atilii favored the praenomina Lucius, Marcus, Gaius, Aulus, and Sextus. Other praenomina do not appear to have been used before imperial times.
The cognomina of the Atilii under the Republic are Bulbus, Calatinus, Longus, Regulus, and Serranus; and of these the Longi were undoubtedly patrician. The only cognomen found on coins is Saranus, which appears to be the same as Serranus. Calatinus, also found as Caiatinus, probably refers either to the town of Cales in Campania, or to the neighboring town of Caia. One of the Atilii Reguli had previously obtained the surname Calenus in consequence of a battle fought at Cales in 335 BC.
The Atilii Reguli were the most important family of the gens. They appear in the latter half of the fourth century BC, and the Atilii Serrani are descended from them. This family flourished until the first century BC.
This article incorporates text from a publication now in the public domain: Smith, William, ed. (1870). "". Dictionary of Greek and Roman Biography and Mythology.