How to Apostille a Certificate of Naturalization: The Federal Process, Start to Finish
A consulate, foreign court, university, or employer told you they need your Certificate of Naturalization with an apostille attached. The instinct is to pull the original out of the safe and mail it somewhere. Resist that instinct.
Your Certificate of Naturalization is a federal document issued by U.S. Citizenship and Immigration Services (USCIS). Federal documents follow a federal apostille route, and that route begins at USCIS. It does not begin at a Secretary of State office, and it does not begin at a notary's desk. People who skip that first step usually find out weeks later, after their package comes back rejected.
The Sheridan Company facilitates state and federal apostille services nation
wide. For this particular document, you handle one step personally: obtaining a Certified True Copy from USCIS. Once you have it, we take the process the rest of the way.
What an Apostille Actually Proves
An apostille is a certificate attached to a public document so a foreign government will accept it. It confirms the signature and seal of the U.S. official who certified the document are genuine. Countries that belong to the Hague Apostille Convention accept it without any further steps.
If your document is headed to a country outside the Convention, you receive an authentication certificate instead, and that country's embassy or consulate typically requires an additional legalization step afterward. The Sheridan Company handles both paths, including embassy legalization for non-Hague countries.
Worth understanding clearly: an apostille does not replace your Certificate of Naturalization, does not grant or confirm citizenship, and does not change a single line of information on the document. It authenticates the certification, nothing more.
Naturalized citizens request this most often when registering dual nationality, applying for a foreign passport, registering a marriage abroad, enrolling children in school overseas, or completing a property or inheritance matter in their country of origin.
Why USCIS Has to Certify the Copy First
A regular photocopy of a Certificate of Naturalization cannot be apostilled. The U.S. Department of State will reject it. Before the document reaches federal apostille processing, USCIS must review your photocopy against the original and certify it.
The vocabulary causes real confusion here. USCIS calls the finished product a Certified True Copy. The Department of State and most foreign governments call the same thing an "authenticated copy." USCIS addresses this directly in its own guidance, How Do I Obtain an "Authenticated" Copy of a Certificate of Naturalization?, confirming the two terms describe one document. When you call USCIS (800-375-5283) to schedule your appointment, use the phrase Certified True Copy, because that is the term their officers recognize.
Two things a notary cannot do for you: certify a copy of a federal document for apostille purposes and rescue a document that has already been notarized. A notary acknowledgment or jurat added to a federal record can disqualify it entirely at the Office of Authentications. State documents get notarized before going to a Secretary of State. Federal documents do not. That difference sends more packages back than any other single error.
Step 1: Request a Certified True Copy From USCIS
Call the USCIS Contact Center at 800-375-5283 and request an in-person appointment at your local USCIS field office. USCIS does not certify copies by mail, by email, or through any online portal. An appointment is the only way.
When you reach a representative, say it plainly:
"I need a Certified True Copy of my Certificate of Naturalization for use abroad."
Ask for more than one copy if you expect to need the document in a second country later.
A second appointment months from now costs you time you can save today.
One detail people miss: USCIS returns both the original and the certified copy directly to you. USCIS does not forward anything to the Department of State on your behalf. The next step belongs to you, and this is where The Sheridan Company steps in.
Step 2: Bring the Right Documents to Your Appointment
USCIS lists three items for the appointment:
Your original Certificate of Naturalization
A clean, complete photocopy of the certificate
Valid government-issued photo identification, such as a U.S. passport, state driver's license, or state ID card
Photocopy quality decides how the appointment goes. The copy must show the full page: certificate number, name, photograph, signatures, seals, borders, and every line of text. No cropped edges, no shadows across the seal, no fold lines running through the signature. Make the copy on a flatbed scanner if you have access to one.
The officer compares your photocopy against the original and verifies your identity. Once identity and citizenship status are confirmed, USCIS certifies the copy and hands both documents back to you. Keep the original certificate somewhere safe. It never leaves your possession during this process.
Step 3: The Sheridan Company Facilitates the Federal Apostille
With your Certified True Copy in hand, send it to The Sheridan Company. We handle everything that follows.
We review the document before it goes anywhere, complete Form DS-4194 with the correct destination country listed, submit the package to the U.S. Department of State's Office of Authentications, track it through processing, and ship the finished document back to you domestically or internationally.
The destination country you name on that form determines what you receive. Hague Convention country, apostille certificate. Non-Hague country, authentication certificate plus consulate legalization. Naming the wrong country, or leaving it blank, produces a document the receiving authority will refuse.
Processing timelines at the Department of State shift with their workload and time of year. If you have a consulate appointment, visa filing, court date, or travel deadline on the calendar, start early and give yourself margin.
Mistakes That Cost People Weeks
Mailing the original certificate. Replacing a lost Certificate of Naturalization means filing Form N-565 and waiting months. Send the USCIS-certified copy instead.
Asking a notary to certify the copy. Only USCIS can certify a copy of your naturalization certificate. A notarized version does not qualify and may invalidate the submission.
Sending the document to a state office. The Oklahoma Secretary of State, or any other state office, has no authority over federal records. Federal documents go to Washington.
Submitting a plain photocopy. It comes back unprocessed every time.
Skipping the translation requirement. Many foreign civil registries require the apostilled document translated into the official language before they will file it. Confirm this with the receiving authority before you assume the apostille alone is enough. The Sheridan Company provides certified document translation in over 150 languages, and we can complete the translation alongside your apostille request.
Frequently Asked Questions
Can I apostille my original Certificate of Naturalization? No. The Department of State apostilles the USCIS-issued Certified True Copy. Your original stays with you.
Can a notary certify a copy of my Certificate of Naturalization? No. USCIS is the only authority that can certify a copy of a naturalization certificate for international use. Notarizing the document creates a problem rather than solving one.
Does my Certificate of Naturalization need a state apostille? No. It is a federal document, so it requires federal apostille processing through the U.S. Department of State. State Secretary of State offices cannot process it.
What if my Certificate of Naturalization was lost, stolen, or badly damaged? File Form N-565 with USCIS to request a replacement certificate. You will need the replacement before you can obtain a Certified True Copy.
Do I need a certified translation along with the apostille? Frequently, yes. Foreign registries, courts, and consulates commonly require the document in their official language. Ask the receiving authority what they require, then let us handle the translation.
Can The Sheridan Company help if I live outside Oklahoma? Yes. We facilitate apostille, authentication, and document legalization for clients in all 50 states and internationally. Clients ship documents to our office, we complete the process, and we return them to any destination you choose.
Can I get a Certified True Copy for a deceased family member? USCIS handles these requests under specific conditions. Explain the situation when you call the USCIS Contact Center and ask what documentation they require.
Ready to Move Forward?
Your part is straightforward: call USCIS, attend the appointment, and collect your Certified True Copy. Our part begins the moment that copy reaches us.
The Sheridan Company facilitates apostille, authentication, and document legalization at both the state and federal level, for every country in the world, with certified translation available in over 150 languages.
Contact The Sheridan Company once you have your USCIS Certified True Copy.
Phone: (405) 960-2717 Email: admin@TheSheridanCo.com