Cognomen Hdo (هدو 
, Hdo 
) , all over the world, is quite a rare last name. The cognomen Hdo is habitual in Sudan, where it is quite a rare surname, Libya, where it is a rare surname, and Iraq. Not in comparison with a country's population, it is the most numerous in Sudan, Iraq, and Morocco. Also, Hdo is the forename as well as the last name.