The gens Pacilia was an obscure plebeian family at ancient Rome.
Few members of this gens are mentioned by the ancient historians, of whom the most famous may be a certain Marcus Pacilius spoken of by Cicero in his second oration against Verres.
[1] The nomen Pacilius belongs to a class of gentilicia formed from other names, using the suffix -ilius.
[i] The main praenomina of the Pacilii were Publius, Lucius, Marcus, Gnaeus, Quintus, and Gaius.
There are individual examples of other names, including Aulus, Sextus, and Spurius.