El Vez (born 1960) is the stage name of Robert Lopez, a Mexican-American rock and roll artist, who performs and records original material and covers classic rock songs. Mixing the styles of Elvis Presley and many other American rock artists with his own Latin-American heritage and music, he is known for expressing revolutionary views through the satire and humor in his songs.

Lopez got his start in music playing guitar for the punk band The Zeros. As El Vez, he is known for his high-production value, frenetic stage show, which features two backup singers/dancers (the Elvettes), numerous on- and off-stage costume changes, and between-song monologues mixing humor and political activism.