| Conflict: | Battle of Placilla |
| Partof: | the 1891 Chilean Civil War |
| Date: | 28 August 1891 |
| Place: | Placilla de Peñuelas, Valparaíso Province, Chile |
| Result: | Congressionist victory |
| Combatant1: |  Balmaceda Government |
| Combatant2: | Congressionist Junta |
| Commander1: | Orozimbo Barbosa |
| Commander2: | Estanislao del Canto |
| Strength1: | 9,500 |
| Strength2: | 11,000 |
| Casualties1: | 1,115 dead 2,500 wounded |
| Casualties2: | 2,070 dead and wounded |
The Battle of Placilla was an engagement fought during the Chilean Civil War of 1891 between Balmacedist and Congressional forces on 28 August 1891. The Congressist victory in the battle effectively determined the outcome of the war. Congressist troops entered Santiago on August 30. President José Manuel Balmaceda committed suicide inside the Argentine embassy in Santiago on 19 September.[1]