Surname Trocoso (Trocoso 
) , in the world, is a very rare cognomen. The cognomen Trocoso is characteristic of Venezuela, where it is a rare surname, Spain, where it is a very rare surname, and Chile. Measured by absolute frequency, it is the most numerous in Venezuela, Spain, and Colombia. Very seldom, Trocoso is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Trocoso | Argentina, Colombia, Venezuela, Spain, Chile |