In most countries, individuals do not change their birth certificates after marriage. A birth certificate is a legal document issued by the government at the time of birth, and it contains vital information such as the person's name, date of birth, place of birth, and the names of their parents. This information does not change due to marriage.
However, some individuals may choose to change their last name or surname after getting married. This name change is typically done through a marriage certificate, not a birth certificate. When you get married, you are issued a marriage certificate, which serves as legal proof of your marriage. Many people use this certificate to update their identification, driver's license, passport, and other documents with their new last name.
If you wish to change your last name after marriage, you will need to go through the necessary legal processes and provide your marriage certificate as evidence of the name change. The birth certificate itself remains unchanged, as it is a record of the circumstances of your birth and does not reflect any changes that occur after birth, such as marriage or name changes.