Gnaeus Arrius Cornelius Proculus was a Roman senator who held at least one appointment in the emperor's service. His career is primarily known through inscriptions. The combination of Proculus' praenomen and nomen led Olli Salomies to observe, "Cn. Arrii are, unlike Cn. Cornelii, not numerous at all, but there is Cn. Arrius Antoninus cos. 69 ... and (Antoninus' grandson?) cos. ord. 121." Thus Salomies agreed with Edmund Groag that there is a connection between Proculus and Arrius Augur (perhaps the former was the latter's grandson by adoption), as opposed to the possibility that he "was a Cn. Cornelius whose mother (or some other relative) was an Arria."