Cognomen Iakoub (Якуб 
, Иакуб , Iakoub 
) , across the world, is quite a rare family name. The family name Iakoub is characteristic of Kyrgyzstan, where it is quite a rare surname, Bulgaria, and Ukraine. Measured by absolute frequency, it most frequently occurs in Ukraine, Russia, and Kyrgyzstan. More prevalently, Iakoub is the forename as well as the last name.