In all the world, Mcklein (Mcklein 
) is a very rare boy's given name. The forename Mcklein is habitual in South-eastern Asia, particularly Philippines, where it is a very rare male name. More prevalently, Mcklein is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Mcklein | Philippines, Malaysia, Australia, United States, South Africa |