Cognomen Uldo (Uldo 
) , throughout the world, is a very rare surname. The surname Uldo is characteristic of Philippines, where it is a very rare surname, Honduras, and Mexico, where it is an extremely rare surname. Very seldom, Uldo is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Uldo | Peru, Philippines, Mexico, Honduras, Brazil |