The Foreign Marriage Act of 1969 allows for the registration of marriages between Indian citizens that take place in a foreign country.
A marriage officer can register the marriage if they are satisfied that it was performed in accordance with the laws of the foreign country. The party who wants the marriage registered must inform the marriage officer in writing and pay the required fee.
Foreign Marriage act:
Section 4 : Conditions relating to solemnization of foreign marriages - a marriage between parties one of whom at least in a citizen of India may be solemnized under this Act by or before a Marriage Officer in a foreign country, if, at the time of the marriage, the following conditions are fulfilled, viz - a) neither party has a spouse living, b) neither party is an idiot or a lunatic, c) the bridegroom has completed the age of twenty-one years and the bridge the age of eighteen years at the time of the marriage ; and d) the parties are not within the degrees of prohibited, relationship.
Provided that where the personal law or a custom governing at least one of the parties permits of a marriage between them, such marriage may be solemnized, notwithstanding that they are within the degrees of prohibited relationship.