Cognomen Сэди (Sadie 
, Сэди 
) , throughout the world, is quite a common family name. The last name Сэди is characteristic of Israel, where it is quite a common surname, Botswana, where it is quite a rare surname, and North Macedonia. In absolute terms, it is the most numerous in Israel, Philippines, and South Africa. More prevalently, Сэди is the forename as well as the last name.