Cognomen Девитт (Dewitt 
, Devitt 
, Девитт 
) , across the world, is a common surname. The surname Девитт is habitual in Ireland, where it is quite a common surname, the United States, where it is quite a rare surname, and Canada. Not in comparison with a country's population, the name is most common in the United States, Canada, and the United Kingdom. Very seldom, Девитт is the forename as well as the last name.