The gens Tedia or Teidia was a minor plebeian family at ancient Rome.
Only a few members of this gens are mentioned in history, but they had reached senatorial rank by the first century BC, and Sextus Tedius Valerius Catullus attained the consulship in AD 31.
[1] Chase classifies the nomen Teidius among those gentilicia that did not originate at Rome, but from one of the northern Italic languages, spoken in Umbria, Picenum, Sabinum, or the southern parts of Latium, although he cannot be more specific as to its origin.
The main praenomina of the Tedii were Quintus and Sextus, both of which were common throughout Roman history, after which they used other common names, including Aulus, Gaius, Lucius, Marcus, and Publius.
In filiations we find the less common Manius, along with Spurius, which had once been a common praenomen, but which by imperial times had fallen out of favour, and was typically used for the filiations of those born out of wedlock, except in families that had traditionally used it as a praenomen.