If you want to use a death certificate in another country, you must have it authenticated by a state official. You can go to the office of the Secretary of State in your state to get your death certificate authenticated. If you don’t get your death certificate authenticated by the State, you will have to take it to the foreign embassy or court to have it legalized.
Apostille service for Death Certificates issued from all 50 U.S. States. Because of the unique requirements of each State, we recommend that you mail to our office the original or a certified copy of the death certificate issued by The State Registrar or local County Clerk in Massachusetts or respective state.