Last name Кейсер (Keiser 
, Keyser , Кейсер 
) , globally, is a common family name. The surname Кейсер is habitual in Western Europe, particularly Belgium, where it is quite a common surname, Switzerland, and Luxembourg, where it is quite a rare surname. Not in comparison with a country's population, it is the most numerous in the United States, Belgium, and South Africa. Also, Кейсер is the forename as well as the last name.