Cognomen Mc Neill (Mc Neill 
) , around the globe, is a rare family name. The last name Mc Neill is habitual in Ireland, where it is quite a rare surname, Australia, where it is a rare surname, and New Zealand. In absolute terms, it is the most numerous in the United States, Ireland, and the United Kingdom.
| VARIANT | COUNTRY |
|---|---|
| Mc Neill | Canada, Australia, United States, United Kingdom, Ireland |