Cognomen ديوي (Dewey 
, Dewe , Diwi 
) , globally, is a common last name. The cognomen ديوي is characteristic of the United States, where it is quite a rare surname, the United Kingdom, and New Zealand. In absolute terms, it is commonest in the United States, Indonesia, and the United Kingdom. Likewise, ديوي is the forename as well as the last name.