Cognomen Mc Donald (Mc Donald 
) , in the world, is quite a common family name. The surname Mc Donald is habitual in Saint Lucia, where it is quite a common surname, Ireland, and Costa Rica, where it is quite a rare surname. Not in comparison with a country's population, it most frequently occurs in the United States, the United Kingdom, and Canada. Very seldom, Mc Donald is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Mc Donald | Canada, Philippines, United Kingdom, United States, Ireland |