Last name หยาบ (Yap 
, Rought 
, หยาบ 
) , all over the world, is a widespread family name. The cognomen หยาบ is habitual in Singapore, where it is a common surname, Malaysia, and British Virgin Islands (explore the name in all countries). Not in comparison with a country's population, it is commonest in South-eastern Asia, particularly Malaysia, Philippines, and Indonesia. Also, หยาบ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Yap | Indonesia, Malaysia, Philippines, Singapore, United States |
| Rought | United Kingdom, United States, India, Canada, New Zealand |
| หยาบ | Thailand |
| Cruden | United Kingdom, Malaysia, Australia, United States, Canada |