Last name Guelbenzu (Guelbenzu 
) , in the world, is a rare cognomen. The cognomen Guelbenzu is habitual in Uruguay, where it is quite a rare surname, Spain, where it is a rare surname, and Argentina, where it is a very rare surname. Measured by absolute frequency, it is the most numerous in Spain, Uruguay, and Colombia. Much less frequently, Guelbenzu is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Guelbenzu | Spain, Colombia, Uruguay, United States, Argentina |
|
juan maría guelbenzu Spanish composer, pianist and organist, ES (b. 1819) |
|
| josé maría guelbenzu Spanish writer, ES (b. 1944) |
|
|
| a. nicuesa guelbenzu researcher |
|
|
| ana nicuesa guelbenzu researcher |
|
|
| manuel de vicente-tutor y guelbenzu ES |
|