Cognomen מקארתי (Mccarthy 
, Mccarty , מקארתי 
) , around the globe, is a widespread surname. The family name מקארתי is habitual in Ireland, where it is a common surname, Isle of Man, where it is quite a common surname, and Australia (explore the name in all countries). Measured by absolute frequency, it most frequently occurs in the United States, the United Kingdom, and Ireland.