Cognomen Vayan (Vaillant 
, Vayan 
, Ваян 
) , around the globe, is a common family name. The cognomen Vayan is habitual in France, where it is quite a common surname, Luxembourg, where it is quite a rare surname, and Cuba. Measured by absolute frequency, this name is the most popular in France, Canada, and India. Much less frequently, Vayan is the forename as well as the last name.