Sotomayor square in Valparaíso, Chile.

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.

Sotomayor Square is located in the port of Valparaíso in the V Region, on the narrow coastal plain of the bay, in front of the Prat pier. Currently constituted as a civic center of the city, it presents an unusual amplitude within it, being inserted in the main transverse axis of the area.

Its main milestone is the Public Monument to the Heroes of Iquique, erected in 1886, under which is the crypt with the remains of the martyrs of the combat fought during the Pacific War. It is the most important memorial monument in Valparaíso, congregating parades and naval ceremonies.