Surname Нельсен (Nelsen 
, Neelsen 
, Нельсен 
) , worldwide, is quite a common cognomen. The family name Нельсен is characteristic of the United States, where it is quite a rare surname, Bahrain, where it is a rare surname, and Germany. Measured by absolute frequency, it most frequently occurs in the United States, Germany, and Indonesia. Much less frequently, Нельсен is the forename as well as the last name.