Cognomen Knafel (Knafel 
) , around the globe, is a rare surname. The family name Knafel is habitual in Poland, where it is a rare surname, Croatia, and the United States, where it is a very rare surname. Not in comparison with a country's population, this name is the most popular in the United States, Poland, and Argentina. Also, Knafel is the forename as well as the last name.