Last name Stoyanoff (Stoyanoff 
) , in the world, is a rare cognomen. The surname Stoyanoff is characteristic of Bulgaria, where it is a rare surname, Australia, and Argentina. In absolute terms, it is commonest in the United States, Argentina, and Australia.
| VARIANT | COUNTRY |
|---|---|
| Stoyanoff | Canada, Bulgaria, Australia, United States, Argentina |
| nicolas stoyanoff (b. 1875) |
|
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| ben stoyanoff New Zealand cricketer (b. 1995) |
|