How do you have a birth certificate corrected because of a misspelled last name?

You can obtain an application to amend a birth certificate from the office of vital records that issued the birth certificate. You may also need to have this notarized, depending on the state.

If the birth record is recent (an infant less than 1 year old) you may not need to provide any proof or other records. If it is an older birth record, you will be required to supply a record that shows the correct spelling, such as a school record, marriage license, medical record, etc. If you are a minor, you will need your parents to sign the application. They may need to provide supporting records, as well.