San Pedro San Pedro refers to several places and things, most notably: a town in Utah, USA; a hallucinogenic cactus native to South America (Echinopsis pachanoi); and San Pedro de Atacama, a town in Chile known for its desert landscapes. natural organism psychological Related Antofagasta Chile La Ceiba Rivera San Fernando San Miguelito San Pedro de Macorís San Pedro Sula Santa Cruz de la Sierra Sonoran Desert Built by Tim Jones