You must be at least 18 years of age to apply, unless your Canadian parents do so for you. You will need to meet the standard residency requirement of having lived in Canada for at least 3 years (1,095 days) within the preceding 4 years before applying, unless you are under 18 years of age. You will also need to meet the necessary language skills (English or French), and if you are between 18 and 54 you will have to pass a Canadian citizenship test.  More Info