Last name ต่วม (Tuam 
, ต่วม) , across the world, is a rare cognomen. The surname ต่วม is characteristic of Papua New Guinea, where it is quite a rare surname, Cameroon, where it is a rare surname, and Ireland. Measured by absolute frequency, the name is most common in Papua New Guinea, Cameroon, and Myanmar. Very seldom, ต่วม is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Tuam | Myanmar, Papua New Guinea, Vietnam, Cameroon, Malaysia |