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 | Malaysia, Indonesia, Philippines, United States, Singapore |
| Rought | India, Canada, United States, New Zealand, United Kingdom |
| หยาบ | Thailand |
| Cruden | Australia, Malaysia, Canada, United States, United Kingdom |