Family name Idagua (Idagua 
) , throughout the world, is a rare cognomen. The surname Idagua is characteristic of Latin America and the Caribbean, particularly Bolivia, where it is quite a rare surname, and Brazil, where it is an extremely rare surname. Much less frequently, Idagua is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Idagua | Brazil, Bolivia, Spain, Nigeria |