Cognomen Dublu (Double 
, Dublu 
, Duplus 
) , around the world, is quite a common family name. The family name Dublu is characteristic of Myanmar, where it is quite a rare surname, New Zealand, and the United Kingdom. Not in comparison with a country's population, it most frequently occurs in Myanmar, the United States, and the United Kingdom. Likewise, Dublu is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Double | Indonesia, China, Taiwan, United States, Myanmar |
| Dublu | Italy, India, United States |
| Duplus | France |