The gens Apustia was a plebeian family at Rome during the period of the Republic. The first member of this gens who obtained the consulship was Lucius Apustius Fullo, in 226 BC.
The praenomina associated with the Apustiii included Lucius, Gaius, and Publius.
The only significant branch of the Apustia gens at Rome bore the cognomen Fullo. It was probably derived from the occupation of one of the Apustii, a cleaner of woolen cloths.