Klein (surname)wikipedia
Klein is the Dutch and German word for "small", which came to be used as a surname, and thence passed into the names of places, concepts and discoveries associated with bearers of this surname.
Klein

Kleijn

Among variant forms are De Kleijn, Kleijne, Klein, Kleine, and Klijn.

List of most common surnames in Europe

most commonmost common surname in Irelandtop twenty

Dutch language

DutchDutch-languagenl
Klein is the Dutch and German word for "small", which came to be used as a surname, and thence passed into the names of places, concepts and discoveries associated with bearers of this surname.

German language

GermanGerman-languagede
Klein is the Dutch and German word for "small", which came to be used as a surname, and thence passed into the names of places, concepts and discoveries associated with bearers of this surname.

Surname

surnamefamily nameoccupational surname
Klein is the Dutch and German word for "small", which came to be used as a surname, and thence passed into the names of places, concepts and discoveries associated with bearers of this surname.

Jews

JewishJewJews
It is also a common Jewish surname in the United States.