Cissonius is a Celtic god worshipped in Gaul. He may have been a god associated with travel and commerce.

Cissonius was sometimes identified by the Romans with their god Mercury by way of the interpretatio romana. He was often depicted in art during the Roman era bearing Mercury’s caduceus (herald’s staff) and winged helmet.


Cissonius received votive and dedicatory offerings from his worshippers; otherwise little is known of the specifics of his cult.

The origin of Cissonius’ name is uncertain; one possible derivation is from the Proto-Celtic *ki-sos or “chariot” which would relate to travel.

Cissonius was known in Gaul, with a particular center of worship in what is now Germany.

Literary evidence

Archaeological evidence
Besancon, France; Charente-Maritime, France; Doubs, France; Saintes, France; Strasbourg, France; Cologne, Germany; Heddernheim, Germany; Hohenberg, Germany; Kreutzwald, Germany; Metz, Germany; Miltenberg, Germany; Rheinzabern, Germany; Stettfield, Germany; Trier, Germany; Avenches, Switzerland; Promontogno, Switzerland