Family name Vanhay (Vanhay 
) , in the entire world, is a very rare surname. The surname Vanhay is habitual in Belgium, where it is a rare surname, France, where it is a very rare surname, and the United Kingdom, where it is an extremely rare surname. Measured by absolute frequency, it most frequently occurs in Belgium, France, and India. Very seldom, Vanhay is the forename as well as the last name.