Last name รบ (Rop 
, รบ 
) , all around the world, is a common cognomen. The cognomen รบ is characteristic of Kenya, where it is quite a common surname, Malaysia, and Slovenia, where it is quite a rare surname. Measured by absolute frequency, it is commonest in Kenya, Malaysia, and Papua New Guinea. Very seldom, รบ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Rop | Kenya, Papua New Guinea, Belgium, Malaysia, India |
| รบ | Thailand |