What should I do if my application for naturalization is rejected?

You can apply for Canadian citizenship again.  This new application must include all required forms and documents, including the new application fee.  There is no waiting period before you can reapply.  However, you should ensure that you meet the requirements for Canadian citizenship before reapplying.

If your application for citizenship is denied, you can also seek a judicial review of the decision in the Federal Court of Canada.  This is not an appeal of that decision.  You have thirty (30) days from the date on the rejection letter to apply.