Surname キャシディ (Cassidy 
, Kassidy 
, キャシディ 
) , around the globe, is a common family name. The surname キャシディ is characteristic of Ireland, where it is quite a common surname, British Virgin Islands, and Bermuda (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. Also, キャシディ is the forename as well as the last name.