Surname Mc Lellan (Mc Lellan 
) , around the world, is a rare last name. The cognomen Mc Lellan is habitual in the United Kingdom, where it is a rare surname, Ireland, and Canada. In absolute terms, the name is most common in the United Kingdom, the United States, and Canada.
| VARIANT | COUNTRY |
|---|---|
| Mc Lellan | Peru, Canada, Ireland, United Kingdom, United States |