Flag of Rio de Janeiro (state)

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Lei Estadual do Rio de Janeiro 5588 de 1965

The flag was officially instituted by State Law No. 5588 of 5 October 1965,^[2] and was unchanged following the state's merger with Guanabara a decade later.

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  Unofficial flag of the province of Rio de Janeiro in the Empire of Brazil^{[citation needed]}
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  Flag of the State of Rio de Janeiro from 1891 to 1937 and 1947–1965, depicting a different version of the state coat of arms^{[citation needed]}