Family name 窓 (Mado 
, 窓 
) , across the world, is a common cognomen. The surname 窓 is habitual in Egypt, where it is quite a common surname, Cameroon, and Lebanon, where it is quite a rare surname. Measured by absolute frequency, it most frequently occurs in Egypt, Cameroon, and Japan. Also, 窓 is the forename as well as the last name.