Surname ปากแข็ง (Stobbart 
, ปากแข็ง 
) , around the globe, is quite a rare cognomen. The last name ปากแข็ง is habitual in the United Kingdom, where it is quite a rare surname, Albania, where it is a rare surname, and New Zealand. In absolute terms, this name is the most popular in the United Kingdom, Canada, and the United States.
| VARIANT | COUNTRY |
|---|---|
| Stobbart | United Kingdom, Albania, United States, Canada, New Zealand |
| ปากแข็ง | Thailand |