Cognomen Kegil (Keel 
, Quille 
, Kegil 
) , around the globe, is a common surname. The cognomen Kegil is habitual in Liechtenstein, where it is quite a common surname, Switzerland, and Estonia, where it is quite a rare surname. Measured by absolute frequency, it is the most numerous in the United States, Switzerland, and Peru. Very seldom, Kegil is the forename as well as the last name.