Cognomen Mercier (Mercier , メルシエ, Мерсье ) , in the world, is a common family name. The cognomen Mercier is characteristic of France, where it is quite a common surname, Marshall Islands, and Canada (explore the name in all countries). Measured by absolute frequency, this name is the most popular in France, Canada, and the United States. Much less frequently, Mercier is the forename as well as the last name.