The Plaza Sotomayor is a plaza in Valparaíso, Chile. It is named after Rafael Sotomayor. The square is lined by buildings occupying full block-fronts of the streets that flank it. The focus of the square is the monument that honors the Chilean sailors who fell during the Battle of Iquique and the Battle of Punta Gruesa. The plaza and surrounding buildings was designated a Zona Típica on January 23, 1979.

Valparaíso is a major city, commune, seaport and naval base facility in Valparaíso Region, Chile.