In India, during a passport renewal, is it mandatory to give the last?
She can continue with the first name if her previous passport has only her first name. If her previous passport has more names and now you want only first name then in such a case you should get a change of name from the said names to the first name. It is not compulsory to add your surname to her name. This is if you wish not to add or make a change. If your wife is a professional degree holder for eg a doctor, a lawyer or any such degree then change in name may create unforeseen hassles in case she wants to pursue her profession in India or abroad as there will be a mismatch in the certificate and her new name. You should use your wisdom as per your thought and suitability. Disclaimer: above is not a legal advice to constitute a client attorney relationship between us. You should act and take decision as per your personal wisdom according to the applicable facts of your case.