Can you keep your Sierra Leone citizenship when you become a U.S. citizen?
Allowed
Yes, in general
Sierra Leonean citizens who become U.S. citizens keep their Sierra Leonean citizenship, since dual nationality has been allowed since 2006.
What the law says
- Since 2006, Sierra Leone has allowed nationals to hold dual nationality.
- Sierra Leoneans of native origin may not lose their nationality.
- Naturalised persons may be denaturalised for disloyalty, crimes against the state, serious ordinary crimes, or extended residence abroad (typically more than seven years).
- Nationals can renounce their nationality pending approval by the state.
- Persons who previously lost nationality due to past dual nationality prohibitions may repatriate.
“Since 2006, Sierra Leone has allowed nationals to hold dual nationality.”
What about the U.S. side?
The United States allows dual citizenship. At the oath ceremony you promise to renounce allegiance to other countries, but U.S. law does not make you formally give up your other passport. The question is only whether Sierra Leone lets you keep yours.
Source: Sierra Leonean nationality law (Wikipedia, summarized on 2026-11-11). Laws change — confirm with the Sierra Leone embassy or consulate before your oath ceremony. This is not legal advice.
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