Victor Moscoso (born 1936 in Oleiros, Galicia, Spain) is a Galician-American artist best known for producing psychedelic rock posters, advertisements, and underground comix in San Francisco during the 1960s and 1970s. Moscoso was the first of the rock poster artists of the 1960s era with formal academic training and experience. After studying art at Cooper Union in New York City and at Yale University, he moved to San Francisco in 1959.