Around the globe, Cậu Út (Cậu Út 
) is a very rare male first name. The first name Cậu Út is habitual in South-eastern Asia, particularly Vietnam, where it is a very rare masculine name. Much less frequently, Cậu Út is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Cậu Út | Japan, Vietnam |