In all the world, Mc Clain (Mc Clain 
) is a very rare boy's given name. The forename Mc Clain is habitual in South-eastern Asia, particularly Philippines, where it is an extremely rare male name. Much more frequently, Mc Clain is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Mc Clain | Philippines, Canada, United States, Germany, Costa Rica |