Constitution of the Republic of Singapore · 2020 Revised Edition · Part 10 · Citizenship
127. Citizenship by naturalisation
Feedback & supportSubject to clause (4), the Government may, upon application made by any person of or over the age of 21 years who is not a citizen of Singapore, grant a certificate of naturalisation to that person if the Government is satisfied —
that he has resided in Singapore for the required periods and intends, if the certificate is granted, to do so permanently;
that he is of good character; and
that he has an adequate knowledge of the national language.
The periods of residence in Singapore or the relevant part of it which are required for the grant of a certificate of naturalisation are periods which amount in the aggregate to not less than 10 years in the 12 years immediately preceding the date of the application for the certificate and which include the 12 months immediately preceding that date.
A person to whom a certificate of naturalisation is granted shall be a citizen of Singapore by naturalisation from the date on which the certificate is granted.
citizen of Singapore
“citizen of Singapore” means any person who, under the provisions of this Constitution, has the status of a citizen of Singapore;
No certificate of naturalisation shall be granted to any person until he has taken the Oath of Renunciation, Allegiance and Loyalty in the form set out in the Second Schedule.