Indian Citizenship Act does not provide for dual citizenship. As per the Passport Act, it is mandatory for all Indian passport holders to surrender their last Indian passport to the Consulate or Regional Passport office (RPO) in India immediately after acquisition of foreign nationality.
It is an offence under the Citizenship Act and the Passports Act for foreign nationals to hold Indian passports. Once Indian passport is surrendered, Consulate/ RPO will cancel and return it to the Passport holder along with Renunciation/Surrender certificate.
For information on surrendering of Indian Passport please visit www.passportindia.gov.in
Those who have acquired foreign nationality after 01.06.2010 may apply for Renunciation Certificate online on the Ministry of Home Affairs (Foreigners Division) website
https://indiancitizenshiponline.nic.in/Renounce
Note: On surrender of Indian Passport, Indian Voter ID Card/Election Photo ID Card (EPIC Card) needs to be surrendered and in case of Ration Card the record needs to be removed by contacting the concerned authority.