Surname Stolworthy (Stolworthy 
) , globally, is a rare last name. The cognomen Stolworthy is characteristic of the United Kingdom, where it is a rare surname, New Zealand, and the United States, where it is a very rare surname. Measured by absolute frequency, it is the most numerous in the United States, the United Kingdom, and South Africa.
| VARIANT | COUNTRY |
|---|---|
| Stolworthy | South Africa, Canada, New Zealand, United Kingdom, United States |