Family name Макдоннелл (Mcdonnell 
, Macdonnell , Макдоннелл 
) , across the world, is a common cognomen. The last name Макдоннелл is characteristic of Ireland, where it is a common surname, Isle of Man, where it is quite a common surname, and Australia. Not in comparison with a country's population, this name is the most popular in the United States, the United Kingdom, and Ireland.