Dis Pater (/ˌdɪs ˈpeɪtər/; Latin: [diːs patɛr]; genitive Ditis Patris), otherwise known as Rex Infernus or Pluto, is a Roman god of the underworld.

Dis Pater eventually became associated with death and the underworld because mineral wealth such as gems and precious metals came from underground, wherein lies the realm of the dead, i.e. Hades' (Pluto's) domain.

[4] Julius Caesar, in his Commentaries on the Gallic Wars (VI:18), states that the Gauls all claimed descent from Dis Pater.

This is an example of interpretatio romana: what Caesar meant was that the Gauls all claimed descent from a Gaulish god that he equated with the Roman Dis Pater.

The servants were digging in the Tarentum on the edge of the Campus Martius to lay foundations following instructions given to Valesius's children in dreams, when they found the altar 20 feet (6 m) underground.