| Conflict: | Battle of Ibiraocaí |
| Partof: | the Portuguese conquest of the Banda Oriental |
| Date: | 19 October 1816 |
| Place: | Rio Grande do Sul, Brazil |
| Result: | Luso-Brazilian victory |
| Combatant1: | United Kingdom of Portugal, Brazil and the Algarves |
| Combatant2: | Federal League |
| Commander1: | João de Deus Mena Barreto |
| Commander2: | José Antonio Berdún |
| Strength1: | 510 |
| Strength2: | 800 |
| Casualties1: | 24 killed and wounded |
| Casualties2: | 262 killed and captured |
The Battle of Ibiraocaí (Portuguese: Batalha de Ibiraocaí), (Spanish: Batalla de Ibirocay) was fought between an army of the United Kingdom of Portugal, Brazil and the Algarves and the forces of José Gervasio Artigas commanded by José Antonio Berdún. The Luso-Brazilians were victorious.