State of Porto Sereno
| State of Porto Sereno Estado do Porto Sereno (Viratian) Tetama Parabi (Goitacá) |
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| Overview | |
| Capital and largest city | Porto Sereno |
| Government type | Federative unit |
| Legislature | Assembleia Legislativa do Porto Sereno / Nhemongaba Obipará (unicameral) |
| Demographics | |
| Demonym(s) | Portuense(s), Portoserenense(s), Sereno(s)/-a(s) |