Cognomen Еиде (Eide 
, Eyde 
, Yeide 
) , across the world, is a common family name. The cognomen Еиде is characteristic of Northern Europe, particularly Norway, where it is a common surname, Denmark, where it is quite a rare surname, and Sweden. Measured by absolute frequency, it most frequently occurs in Norway, the United States, and Egypt. Much less frequently, Еиде is the forename as well as the last name.