Last name アイヒ (Eich 
, アイヒ 
) , in the world, is a common surname. The cognomen アイヒ is characteristic of Western Europe, particularly Germany, where it is quite a rare surname, Luxembourg, and Switzerland. Not in comparison with a country's population, it most frequently occurs in Germany, the United States, and Brazil. Very seldom, アイヒ is the forename as well as the last name.