Plaza Sucre, Viña del Mar, Central plaza in Viña del Mar, Chile.

Plaza Sucre is a rectangular public square in central Viña del Mar with broad walkways, green spaces, and Canary palm trees providing shade throughout the area. A bronze monument to Diego Portales stands on the northern side as a focal point.

Construction of the plaza began in 1882 after residents requested a dedicated space for national celebrations and local festivities. This established it as a central gathering point for public events in the growing city.

The square is named after Antonio José de Sucre, a hero of Spanish American independence, though it originally carried the name Plaza Arturo Prat and later Plaza José Francisco Vergara. In the early 20th century it swapped names with the square immediately to its north, which is how it became Plaza Sucre. Its surroundings include the Club de Viña del Mar, the Viña del Mar station of the Limache-Puerto train, the Parroquia de Nuestra Señora de los Dolores and the Ripley and Falabella stores.

The plaza is bounded by Calle Valparaíso to the north and Calle Viana to the south, with the Avenida Libertad extension opening on its east and west sides. Renovation work begun in 2012 added underground parking beneath the square along with new green areas. The Viña del Mar station of the Limache-Puerto train and the Nuestra Señora de los Dolores parish stand in the surrounding blocks.

The square and the one directly north swapped names: the old Plaza Vergara became Plaza Sucre and vice versa. A monument to José Francisco Vergara, erected here on 1 January 1910, was later moved to the entrance of the Quinta Vergara.