Can I Keep My Nigerian Citizenship if I Become a U.S. Citizen?
Generally yes, you can keep it
Nigeria allows dual citizenship for citizens by birth.
Nigerians who are citizens by birth keep their nationality after naturalizing abroad. Different rules can apply to people who became Nigerian by registration rather than by birth.
What the United States does
The United States allows dual citizenship. It does not require you to give up your previous citizenship to naturalize, and taking the Oath of Allegiance does not, by itself, make the U.S. treat your other citizenship as lost. Whether you actually keep it depends on the laws of your country of origin, described below.
Before you decide
Citizenship laws change, and your individual case can have details that matter. Before you naturalize, confirm the current rules with a Nigeria consulate or embassy, and consider speaking with an immigration attorney if keeping your other citizenship is important to you.
This is general information, not legal advice, and is current as of 2026. Always confirm with official sources.