Cognomen بلوز (Blouse 
, بلوز 
, Belozoglu 
) , in all the world, is quite a rare last name. The cognomen بلوز is habitual in Northern Africa, particularly Libya, where it is quite a rare surname, Algeria, where it is a rare surname, and Egypt. Measured by absolute frequency, it is commonest in the United States, Egypt, and Indonesia.
| VARIANT | COUNTRY |
|---|---|
| Blouse | France, Algeria, South Africa, United States, Indonesia |
| بلوز | Sudan, Libya, Algeria, Syria, Egypt |
| Belozoglu | Indonesia, Turkey |