Rigisamus, also Rigisamos, was a deity in Gaulish and Celtic mythology who, according to the Interpretatio Romana, was connected with Mars.
Rigisamus is mentioned in two inscriptions, one in Bourges (Cher department, Region Center-Val de Loire in France),[1] and the other in West Cocker (in Yeovil, district of South Somerset in England)[2] together with a picture of God and the following text:[3]
The name Rigisamus is derived from a reconstructed Proto-Indo-European root * rīg ("king", "royal") and a second, * -samo, * samali ("unique"). Rigisamus would therefore mean "the most royal", or "king of kings". The Irish word rí [ R'iː ] and the Gallic rix [rīg-s ] (both also mean “king”) are directly related to this.
It is unknown which properties of Mars are attributed to Rigisamus.