Family name Сифер (Siffert 
, Сифер 
) , all around the world, is quite a rare cognomen. The family name Сифер is characteristic of Western Europe, particularly Switzerland, where it is quite a rare surname, France, and Austria, where it is a rare surname. In absolute terms, this name is the most popular in France, Switzerland, and the United States. Very seldom, Сифер is the forename as well as the last name.