Cognomen Nailo (Nailon 
, Nailo 
) , in the world, is quite a rare last name. The cognomen Nailo is habitual in Philippines, where it is quite a rare surname, Tanzania, where it is a rare surname, and Australia. Measured by absolute frequency, it most frequently occurs in Philippines, the United States, and Tanzania. Very seldom, Nailo is the forename as well as the last name.