Do my KYC documents need to be certified for a Marshall Islands corporation?

The registered agent usually wants certified passport and address copies for directors, officers and beneficial owners. A lawyer, notary or accountant can certify them. When a signed document has to be used in another country later, an apostille works in most places, because the Marshall Islands applies the Apostille Convention.

Certification and apostille

Source: Status table: Apostille Convention, Hague Conference on Private International Law (HCCH)