Family name Yaca (Yaca 
, Yacca 
) , in the entire world, is quite a rare surname. The last name Yaca is characteristic of Fiji, where it is quite a rare surname, Bolivia, where it is a rare surname, and the Democratic Republic of the Congo. Not in comparison with a country's population, the name is most common in India, the Democratic Republic of the Congo, and Bolivia. Likewise, Yaca is the forename as well as the last name.