Cognomen Aguier (Aguier 
) , in all the world, is a very rare surname. The surname Aguier is characteristic of France, where it is a very rare surname, Canada, where it is an extremely rare surname, and the United States. Not in comparison with a country's population, it most frequently occurs in France, the United States, and India. Much less frequently, Aguier is the forename as well as the last name.