Spurius (Latin pronunciation: [ˈspʊrɪ.ʊs]) is a Latin praenomen, or personal name, which was used primarily during the period of the Roman Republic, and which fell into disuse in imperial times. It was used by both patrician and plebeian families, and gave rise to the patronymic gens Spurilia. The feminine form is Spuria. The name was originally abbreviated S., as it was the most common praenomen beginning with that letter; but, as it grew less common, it was sometimes abbreviated Sp.