Cognomen Идо (Ido 
, Bunshiro 
, Reizan 
) , all over the world, is a common last name. The cognomen Идо is characteristic of Israel, where it is quite a common surname, Qatar, where it is quite a rare surname, and Burkina Faso. Measured by absolute frequency, it is commonest in Israel, Philippines, and Indonesia. More frequently, Идо is the forename as well as the last name.