The name Adrien is a French form of Adrian, which in turn is derived from the Latin name Hadrianus. This means "the one who comes from the city of Hadria" or "the inhabitant of Adria". Adria was an ancient city in northern Italy that gave its name to the Adriatic Sea. The name day for Adria is January 9, when St. Adrian of Nicomedia is celebrated. He was a Roman officer who converted to Christianity and was executed for it.
So if you give your dog the name Adrien, you can tell him an exciting story. Perhaps he has inherited some of the courage and loyalty of St. Adrian. Or maybe he just likes the sea and Italian cuisine. Either way, Adrien is a beautiful and melodious name for a dog that can be both elegant and playful.