Last name Келі (Kelly 
, Келі 
) , worldwide, is a widespread family name. The last name Келі is characteristic of Ireland, where it is a widespread surname, Aruba, and Saint Kitts and Nevis, where it is a common surname (explore the name in all countries). Not in comparison with a country's population, this name is the most popular in the United States, the United Kingdom, and Ireland. Likewise, Келі is the forename as well as the last name.