Cognomen Макграт (Mcgrath 
, Макграт 
) , around the world, is a common family name. The last name Макграт is habitual in Ireland, where it is a common surname, Guernsey, where it is quite a common surname, and Marshall Islands (explore the name in all countries). Not in comparison with a country's population, it most frequently occurs in the United States, the United Kingdom, and Australia.