Surname Watt-Smith (Watt-Smith 
) , around the globe, is a very rare family name. The last name Watt-Smith is habitual in the United Kingdom, where it is a very rare surname, and the United States, where it is an extremely rare surname. Parts of the name also exists independently as a last name Watt, and a last name Smith.
| VARIANT | COUNTRY |
|---|---|
| Watt-Smith | United Kingdom, United States |
| claire watt-smith Entrepreneur and businessperson (b. 1994) |
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