The Citizenship Act, 1955 provides for acquisition of Indian citizenship, by birth, descent, registration, naturalization and incorporation of territory and determination of Indian citizenship after the commencement of the Constitution of India. It also makes necessary provisions for the termination and deprivation of Indian citizenship under certain circumstances. The Citizenship Rules, 1956 prescribe certain forms and procedure for acquisition of Indian citizenship. The Citizenship Act, 1955 has been amended on several occasions.
Every person born in India shall be a citizen of India by birth -
on or after the 26th day of January,1950, but before the 1st day of July, 1987;
on or after the 1st day of July, 1987, but before the commencement of the Citizenship (Amendment) Act, 2003 and either of whose parents is a citizen of India at the time of his birth;
on or after the commencement of the Citizenship (Amendment) Act, 2003, where-
both of his parents are citizens of India; or
one of whose parents is a citizen of India and the other is not an illegal migrant at the time of his birth.
A person shall not be a citizen of India if at the time of his birth-
either his father or mother possesses such immunity from suits and legal process as is accorded to an envoy of a foreign sovereign power accredited to the President of India and he or she, as the case may be, is not a citizen of India; or
his father or mother is an enemy alien and the birth occurs in a place then under occupation by the enemy.