Last name Duque Barrera (Duque Barrera 
) , worldwide, is a very rare family name. The cognomen Duque Barrera is characteristic of Ecuador, where it is a very rare surname, Chile, and Spain. In absolute terms, it is commonest in Ecuador, Spain, and Colombia.
| VARIANT | COUNTRY |
|---|---|
| Duque Barrera | Chile, Colombia, Ecuador, Spain |