Family name Сейлер (Seiler 
, Seyler 
, Сейлер 
) , all over the world, is a common cognomen. The surname Сейлер is characteristic of Western Europe, particularly Switzerland, where it is quite a common surname, Luxembourg, and Germany. In absolute terms, it most frequently occurs in Germany, the United States, and Switzerland. Much less frequently, Сейлер is the forename as well as the last name.