Vibia gens

Although individuals named Vibius appear in history during the time of the Second Punic War, no members of this gens are found at Rome until the final century of the Republic.

The emperors Trebonianus Gallus and Volusianus each claimed descent from the family.

The name is generally regarded as an Oscan praenomen, and it is found extensively in Campania, but it was also used in Latium, and appears at Rome from a very early period, being used by the patrician Sestii, and occasionally by members of several prominent plebeian families.

A family of imperial times used the praenomen Titus, while individual examples of Aulus and Sextus are known.

Both surnames derive from the physical characteristics of the persons to whom they originally applied; Pansa translates as "splay-footed", while Varus is "knock-kneed".