Cognomen Hayden-Smith (Hayden-Smith 
) , in all the world, is a very rare family name. The cognomen Hayden-Smith is characteristic of Australia, where it is a very rare surname, the United Kingdom, and South Africa, where it is an extremely rare surname. Parts of the name also exists independently as a last name Hayden, and a last name Smith.
| VARIANT | COUNTRY |
|---|---|
| Hayden-Smith | United States, United Kingdom, South Africa, Australia |
| andrew hayden-smith British actor and television presenter, GB (b. 1983) |
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