Surname Idus (Ide 
, Idos 
, Idus ) , across the world, is a common cognomen. The family name Idus is habitual in Belgium, where it is quite a common surname, Niger, where it is quite a rare surname, and Philippines. In absolute terms, this name is the most popular in Philippines, India, and the United States. Also, Idus is the forename as well as the last name.