Gueguen

Gueguen refers to a Breton family name and is common in France, specifically in the Brittany region. It is a patronymic surname, meaning it is derived from a given name, in this case, likely derived from a Breton form of a Germanic name. The precise etymology is debated, but it is generally believed to be a variant or diminutive of names containing the element "wig," meaning war or battle. As such, the name Gueguen implies "son of" or "descendant of" someone whose name contained this element.

The name can also be spelled in various ways, including Guéguen, Gueguen, and Guéguant. It is predominantly found in the Finistère and Côtes-d'Armor departments of Brittany.

People with the surname Gueguen have emigrated to other countries, including the Americas and other parts of Europe.