Worldwide, Керстен (Kersten 
, Kerstens , Керстен 
) is quite a rare unisex first name. The first name Керстен is habitual in Malta, where it is quite a rare male name, Germany, where it is a rare gender-neutral name, and Belgium, where it is a rare boy's name. In absolute terms, this name is the most popular in the United States, Germany, and Egypt. More frequently, Керстен is the last name as well as the forename.