Can I apply to renew my passport to update my spouses name before?
No need to do it. You can always prove your marital status by producing a marriage certificate. If your spouse has no passport so far, she can apply for it and indicate your name as your spouse (Husband) in the passport. This will be an additional source to prove your and your wifes marital status. Nevertheless, if you are bent upon adding your spouses name in your passport or you need it as a mandatory requirement by any authority, you can do it under addition provision if your passport has validity of more than a year or apply for a new passport under reissue category if validity of your passport is less than a year.Unless there is a change in address on your current passport, you are not required to submit any documents except a marriage certificate in your case to incorporate your marital status.