Béguios (also sometimes spelled Beguios) is a Gaulish theonym. It is generally understood to be associated with lightning or thunder, and thus considered a deity of the sky or storms. The name appears on a single dedicatory inscription found in Chatou, France. The inscription, written in Latin, reads "Iovi Beguios," which translates to "To Jupiter Béguios."
The association with Jupiter suggests syncretism between the Gaulish deity Béguios and the Roman god Jupiter. This was a common practice in Roman Gaul, where local deities were often identified with Roman counterparts to facilitate religious integration and Romanization. The identification with Jupiter, typically associated with the sky, lightning, and thunder, is the primary basis for understanding Béguios's likely function as a storm god.
Beyond the single inscription, there is little direct evidence about the rituals or mythology specifically associated with Béguios. The limited archaeological and textual record makes it difficult to reconstruct a detailed picture of the deity's role in Gaulish religion. Analysis relies heavily on comparative mythology and the context provided by the Roman syncretism.