Family name Mcgaffin (Mcgaffin 
) , all around the world, is a rare last name. The surname Mcgaffin is characteristic of New Zealand, where it is a rare surname, Australia, and the United Kingdom. Not in comparison with a country's population, it most frequently occurs in the United States, the United Kingdom, and Australia.
| VARIANT | COUNTRY |
|---|---|
| Mcgaffin | United Kingdom, Canada, Australia, New Zealand, United States |
| william mcgaffin (b. 1910) |
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| madison gray mcgaffin researcher ORCID ID = 0000-0002-2676-8419 |
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| joseph mcgaffin Peerage person ID=382531 |
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| cassandra r mcgaffin researcher (ORCID 0000-0003-2756-9363) |
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