Classification and Origin of MCPHAIL
| Region of origin | British Isles |
| Country of origin | Scotland |
| Language of origin | Gaelic |
| Ethnic origin | Celtic |
| Religious origin | Christian |
| Surname Derivation | From name of parent |
Data for religion and/or language relates to the culture in which the MCPHAIL surname originated. It does not necessarily have any correlation with the language spoken, or religion practised, by the majority of current British residents with that name.
