Annio

Annio is a masculine given name of Latin origin. It is a variant spelling of the classical name Annius, from the gens Annii, a patrician family in ancient Rome. In medieval and Renaissance Latin texts, Annio appears as a common form for personal names and sometimes as a surname. The form is especially associated with Italian usage, where it appears in historical and literary contexts.

The best-known bearer of the name is Annius of Viterbo, also known as Annio da Viterbo, a 15th-century Italian humanist and antiquarian. He compiled and published a collection of supposed ancient histories and genealogies that he attributed to lost classical authorities. His work helped popularize interest in antiquity during the Renaissance, but modern scholarship regards much of his material as unreliable or forged, and some attributions have been proven spurious.

In modern times, Annio remains uncommon as a given name or surname outside of Italian contexts. When encountered, it is typically recognized as a historical or literary form rather than a routinely used personal name.