All around the world, Cathail (Cathail 
) is an extremely rare masculine first name. More prevalently, Cathail is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Cathail | Ireland, United Kingdom, Brazil |
|
cathail gabanaigh uí dubhthaigh Irish nationalist, journalist, poet and Australian politician (1816-1903), IE (b. 1816) |
|
| cathail o'mahony Irish Gaelic footballer (b. 1999) |
|