Cognomen Снелл (Snell 
, Снелл 
, Snellius 
) , across the world, is a common surname. The cognomen Снелл is habitual in Guernsey, where it is a common surname, New Zealand, where it is quite a rare surname, and the United Kingdom. In absolute terms, it is commonest in the United States, the United Kingdom, and Australia. Much less frequently, Снелл is the forename as well as the last name.