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Look up Alegrete in Wiktionary, the free dictionary.
Alegrete is a Brazilian municipality in Rio Grande do Sul, Brazil.
Alegrete may also refer to:
- Alegrete do Piauí, a municipality in Piauí, Brazil
- Alegrete (Portalegre), a civil parish in the district of Portalegre, near Serra de São Mamede, Portugal
- Castle of Alegrete, a castle in the civil parish of Alegrete, Portugal