Can I Keep My Vietnamese Citizenship if I Become a U.S. Citizen?
It depends on your situation
Vietnam generally follows a one-nationality principle, with limited exceptions.
Vietnamese law is built around a single nationality, and many people who naturalize abroad are treated as having given up Vietnamese citizenship, though there are exceptions and the rules have shifted over time. Confirm your specific situation with a Vietnamese consulate.
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 Vietnam 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.