Surname Watson-Williams (Watson-Williams 
) , in the entire world, is a very rare cognomen. The last name Watson-Williams is habitual in the United Kingdom, where it is an extremely rare surname, and the United States. Parts of the name also exists independently as a last name Watson, and a last name Williams.
| VARIANT | COUNTRY |
|---|---|
| Watson-Williams | United Kingdom, United States |
| patrick watson-williams physician, GB (b. 1863) |
|