Family name Sagárnaga (Sagárnaga 
) , throughout the world, is a very rare cognomen. The cognomen Sagárnaga is habitual in Latin America and the Caribbean, particularly Bolivia, where it is a rare surname, and Argentina, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Sagárnaga | Argentina, Bolivia |
| juan bautista sagárnaga BO (b. 1766) |
|