Last name Sai-Vega (Sai-Vega 
) , around the globe, is an extremely rare cognomen. The family name Sai-Vega 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 first name Sai, and a last name Vega.
| VARIANT | COUNTRY |
|---|---|
| Sai-Vega | United States |