Updating name on passport
You need to apply for a new passport when changing your surname (last name) following a relationship status change, such as marriage or divorce.You will need to include all the required documents for a new adult general application and pay the full fee.
In this case, fill out Form DS-5504, and send your original passport, a passport-sized photo, and proof of the name change by mail.
If you change your name by marriage or civil union you can still travel on a passport that’s in your original name (e.g. You just need to make sure you book your tickets using the name in your passport.