Surname Kwil (Kwil 
, กวิล 
) , in the world, is a rare cognomen. The last name Kwil is habitual in Poland, where it is a rare surname, Germany, where it is a very rare surname, and the United Kingdom. Measured by absolute frequency, it is commonest in Poland, Germany, and the United States. More frequently, Kwil is the forename as well as the last name.