Last name Mc Grogan (Mc Grogan 
) , around the world, is a very rare cognomen. The last name Mc Grogan is characteristic of Ireland, where it is a rare surname, the United Kingdom, where it is a very rare surname, and the United States, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Mc Grogan | United States, United Kingdom, France, Ireland |