Last name Yerba (Yelva 
, Yerba 
, Yerba Santa) , worldwide, is quite a rare surname. The family name Yerba is characteristic of Latin America and the Caribbean, particularly Nicaragua, where it is quite a rare surname, Peru, and Honduras, where it is a rare surname. Measured by absolute frequency, the name is most common in Latin America and the Caribbean, particularly Peru, Nicaragua, and Argentina. Also, Yerba is the forename as well as the last name.