US Popularity Rank: 1314

Origin: French

Meaning: follower of Dionysus

Dennis is a boy's name of Greek origin and a variant of the French name Denis. Both a surname and given name, it means "follower of Dionysus." In Greek mythology, Dionysus was the son of Zeus and Semele and the god of vegetation, fertility and wine. If you're inspired by ancient folklore or magical myths, a name like Dennis is a worthy contender for your little boy. For variety, you can spell it as Denys or Denis and shorten it to Denny.