Vestinian is an extinct Italic language documented only in two surviving inscriptions of the Roman Republic.

It is presumed to have been anciently spoken by the tribe of the Vestini, who occupied the region within current Abruzzo from Gran Sasso to the Adriatic Sea in east-central Italy during that time.

Not enough of their presumed language survives to classify it beyond Italic.

Vestinian is one of a number of scantily attested Italic languages spoken in small regions of the Apennines directly east of Rome called generally "the minor dialects".

[2] However, de Vaan's consensus classification has it as Osco-Umbrian, closely related to Oscan (see Italic languages § Classification).