Across the world, Mcgiffin (Mcgiffin 
) is an extremely rare unknown gender first name. Much more prevalently, Mcgiffin is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Mcgiffin | United Kingdom, United States, Canada, Australia |
|
roy mcgiffin Canadian ice hockey player, US (b. 1891) |
|
| lee mcgiffin US (b. 1908) |
|