If you didn't apply for selective service can you still become a citizen?

Yes, you can still become a U.S. citizen even if you did not apply for selective service, but it may complicate the process. The U.S. Citizenship and Immigration Services (USCIS) typically requires males aged 18 to 25 to register for selective service as part of the naturalization process. However, if you have a valid reason for not registering, such as being outside the U.S. during that period or not being aware of the requirement, you can explain your situation during your citizenship interview. Ultimately, decisions are made on a case-by-case basis.