To apply for a passport, visit visit Passport Canada’s website and fill out an interactive application form. You may also print out the form and fill it out by hand. Application forms may also be obtained in person at any Government of Canada office in the United States.
Applicants who have changed their name cannot have a passport issued in their new name through the Simplified Passport Renewal Process. You must apply for a new passport (Adult General Passport Application PPTC 153)
You must submit an application form, completed in full, proof of Canadian Citizenship,supporting identification in your married name/ legal name, 2x photos (one of which is signed by the guarantor), required fees.
The application must be sent to the Gatineau office in Canada. For further instructions on submitting and the fees please visit Passport Canada: https://www.canada.ca/en/immigration-refugees-citizenship/services/canadian-passports/fees.html