Last name West-Watson (West-Watson 
) , in the entire world, is a very rare cognomen. The last name West-Watson 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 West, and a last name Watson.
| VARIANT | COUNTRY |
|---|---|
| West-Watson | United States, United Kingdom |