Surname Maccathmhaoil (Maccathmhaoil 
) , in the world, is a very rare family name. The surname Maccathmhaoil is habitual in Northern Europe, particularly Ireland, where it is a rare surname.
| VARIANT | COUNTRY |
|---|---|
| Maccathmhaoil | Ireland |
| seosamh maccathmhaoil Irish writer, poet, IE (b. 1879) |
|