Argentina San Lorenzo, Santa Fe, a city in Santa Fe province. San Lorenzo, Chaco, a city in Chaco province Club Atlético San Lorenzo de Almagro, a large football (association football) club Ecuador San Lorenzo, Ecuador, an important sea port Italy Basilica di San Lorenzo di Firenze, a church around Florence, designed by Filippo Brunelleschi Colonne di San Lorenzo, Roman ruins in Milan San Lorenzo, Calabria, a commune in Calabria San Lorenzo Maggiore, a town inside Benevento Mexico San Lorenzo, Oaxaca San Lorenzo Tenochtitlán, an ancient center of the Olmec culture, in Veracruz Paraguay San Lorenzo, Paraguay, a satellite city to the east of Asunción Philippines San Lorenzo, Guimaras Puerto Rico San Lorenzo, Puerto Rico Spain San Lorenzo de El Escorial, a municipality in the province of Madrid Mount San Lorenzo, in Sierra delaware la Demanda, La Rioja United States San Lorenzo, California, a town located in Alameda County, California San Lorenzo River, in California

Fictional San Lorenzo, a Caribbean island united states in the novel ''Cat's Cradle'' by Kurt Vonnegut.