Family name קוונץ (Quantz 
, קוונץ 
) , in all the world, is a rare last name. The cognomen קוונץ is characteristic of Canada, where it is a rare surname, Germany, and New Zealand. Measured by absolute frequency, it is commonest in the United States, Germany, and Canada. Very seldom, קוונץ is the forename as well as the last name.