Citizenship Services

One can become a U.S. Citizen through a variety of means—birth in the United States, birth abroad to a U.S. citizen parent, or through the naturalization process.  For all of these, a specific series of legal requirements must be met. At the U.S. Embassy in Lisbon, Portugal we can provide certification of U.S. citizenship for eligible individuals born abroad to U.S. citizen parents.  Our US Embassy in Lisbon, Portugal also processes Certificates of Loss of Nationality for those U.S. citizens who would like to give up their U.S. citizenship or believe that they have expatriated themselves.

For more information, please click on the appropriate service below:

As a U.S. citizen parent(s), you should report your child’s birth abroad as soon as possible to the nearest U.S. Embassy to establish an official record of the child’s claim to or acquisition of U.S. citizenship at birth. The official record will be the Consular Report of Birth Abroad (CRBA), Form FS-240. This form is evidence of U.S. citizenship, issued to a child born abroad to a U.S. citizen parent or parents who meet the requirements for transmitting citizenship under the Immigration and Nationality Act (INA).  CRBA applications must be made before the child’s 18th birthday.

Applying for a Consular Report of Birth Abroad

Starting November 21, 2017, all appointments for Consular Report of Birth Abroad (CRBA) applications at U.S. Embassy Lisbon will be made through a mail-in appointment scheduling system in order to provide better service to our applicants.

The option for a CRBA appointment on the Consular scheduling system has been discontinued. Drop-off requests at the Embassy will not be accepted.

This new system will reduce the wait time and help families prepare for the citizenship appointment at the Embassy. For your convenience, you may also apply for your child’s first passport when you report your child’s birth.

Please read carefully and follow the instructions below:

  1. Print the U.S. Embassy Lisbon CRBA Mail-In Checklist (PDF 440KB);
  2. Gather all required documents, including the application forms (DS-2029 (PDF 62 KB) & DS-11(PDF 98 KB), if applicable);
  3. Send the following, in the same order as indicated on the checklist, to the U.S. Embassy address provided below:
  • Completed and signed checklist;
  • Completed but NOT SIGNED application forms;
  • Picture of the child 5x5cm with a white background & face-forward;
  • Photocopies of ALL the required documentation (DO NOT SEND ORIGINALS).

Embaixada dos Estados Unidos da América
Avenida das Forças Armadas
Secção Consular / CRBAs
1649-044 Lisboa 

  1. Embassy Lisbon will schedule an appointment for you within 10 business days of receiving your application. American Citizen Services staff will inform you of the date and time of your appointment either by phone or email.  Personal appearance of the child and both parents is required.  If you cannot attend an appointment within the timeframe provided, please attach a letter indicating your specific days of availability.  Your request will be subject to review by a Consular Officer; 
  1. Please come prepared for your interview! Bring ALL originals of the required documentation, including passports, IDs, Birth Certificate. Please refer to the Checklist for details on required items.  If your application is incomplete on the day of your appointment, you may be asked to submit additional evidence and/or come-in for a second appointment.  The service fees can be paid in cash (dollars or euros) or major credit cards.  Debit and Multibanco card payment is not accepted; 
  1. If you need to cancel your appointment do it in advance of your appointment date, contacting the American Citizen Service section either by phone or email.  If you fail to attend your appointment with no notice, all documents mailed to us will be destroyed and you will need to restart the application process.

If you are over the age of 18, were born to a U.S. citizen parent or parents, and believe that you have a claim to U.S. citizenship, please review this website for more information on U.S. nationality law.

To renounce U.S. citizenship, you must perform a series of actions voluntarily and with intent to relinquish U.S. citizenship.  The basic nature and elements of a renunciation are outlined here at

U.S. citizens cannot effectively renounce their citizenship by mail, through an agent, or while in the United States because of the provisions of section 349(a)(5) of the Immigration and Nationality Act.  All renunciations and other recognitions of loss of nationality for U.S. citizens in Portugal are processed at the U.S. Embassy in Lisbon, Portugal.

Email to arrange for an appointment, and for more information on the required documentation.