<!-- Deleted image removed: thumb|In 2003, Robbie Conal targeted celebrity California governor Arnold Schwarzenegger, who had been accused of having Nazi sympathies. -->

Robert "Robbie" Conal (born 1944) is an American guerrilla poster artist noted for his gnarled, grotesque depictions of U.S. political figures of note. A former hippie, he is noted for distributing his poster art throughout a city overnight using his "volunteer guerrilla postering army". After living briefly in Canada he obtained a MFA from Stanford University in 1978, and moved to the Los Angeles area in 1984,