Family name Syjuco-Duena (Syjuco-Duena 
) , globally, is an extremely rare surname. The surname Syjuco-Duena is characteristic of Northern America, particularly the United States, where it is an extremely rare surname. Parts of the name also exists independently as a last name Syjuco, and a last name Duena.
| VARIANT | COUNTRY |
|---|---|
| Syjuco-Duena | United States |