Last name יאקוב (Iacob 
, יאקוב 
) , all over the world, is a common family name. The cognomen יאקוב is habitual in Romania, where it is a common surname, Moldova, where it is quite a common surname, and Andorra. In absolute terms, it most frequently occurs in Romania, Italy, and Moldova. Very seldom, יאקוב is the forename as well as the last name.