Marriage Certificate apostille for Portugal.

A Portuguese citizen who married in Florida must have the marriage transcribed into the Portuguese civil registry, through the consulate or the Conservatória dos Registos Centrais. That transcription is also the starting point for a foreign spouse's nationality: after more than three years of marriage, the spouse can declare the wish to become Portuguese; check the current conditions after the 2026 reform. The Florida certificate must be signed by the State Registrar or a Clerk of the County Court and apostilled. If either spouse was divorced before, that divorce has its own Portuguese recognition step.

Our general rule is a translation certified by the translator, notarized by a separate notary and apostilled in Florida, but for Portugal you often need no translation at all. Civil registries can waive it for English, French or Spanish documents when the official knows the language (book ahead), and IRN nationality forms and DGES do the same. When Portugal does require one, the IRN expects it certified in Portugal by a notary, registry officer, lawyer, solicitador or recognized chamber of commerce, or by a Portuguese consulate in the issuing country.