Duque de Caxias[2] ("Luís Alves de Lima e Silva, Duke of Caxias") is a bairro in the District of Sede in the municipality of Santa Maria, in the Brazilian state of Rio Grande do Sul.

It is located in centre-west Santa Maria.

The bairro contains the following villages: Duque de Caxias, Parque Residencial Duque de Caxias, Vila Lameira, Vila Moreira, Vila Plátano.

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