Cognomen Trnidad (Trnidad 
) , worldwide, is a very rare last name. The last name Trnidad is habitual in Spain, where it is a very rare surname, Peru, and Mexico. In absolute terms, it is the most numerous in Mexico, Philippines, and Spain. Likewise, Trnidad is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Trnidad | Spain, Philippines, Mexico, United States, Peru |