Cognomen Сеиде (Seide , Сеиде ) , across the world, is quite a common last name. The family name Сеиде is characteristic of Guinea-Bissau, where it is quite a common surname, Haiti, where it is quite a rare surname, and the Dominican Republic. Not in comparison with a country's population, it most frequently occurs in Ethiopia, Germany, and Haiti. Likewise, Сеиде is the forename as well as the last name.