If you intend to change your last name once you are married, that can usually be done through the marriage process. Once you receive your marriage certificate, it will be your responsibility to notify certain government agencies and update your official identification documents with your new legal name.

A person is generally allowed to change their first name, last name, middle name, or full name—provided the name change is not for a fraudulent purpose or to avoid creditors. The process is often initiated by filing a name change petition in court and providing notice of the name change to government agencies such as (1) the state department of motor vehicles or department of public safety that issues driver’s licenses and (2) the U.S. Social Security Administration.

State voter registration records and passport information (U.S. Department of State) will also need to be updated to reflect a name change.

Some states—such as California—allow a person to change their name simply by using a different name in all aspects of their life. This is known as the usage method for name change. But government agencies will often require a court order as official proof of a name change, so it is generally best to follow that process.

A person may seek a name change for a number of reasons. Following marriage, one spouse will often change their last name to the other spouse’s last name. And one or both spouses generally may change their name following divorce. A person may also change their name to match their gender identity. And the name of a minor child may be changed—often when a parent remarries and the parent’s new spouse adopts the child.

Name change laws vary from state to state and are usually located in a state’s statutes—often in the family code or domestic relations code.

In Massachusetts, changing your last name after marriage is a common practice and can be done as part of the marriage process. After the marriage, the new name is reflected on the marriage certificate, which serves as legal proof of the name change. It is then the individual's responsibility to notify various government agencies, including the Massachusetts Registry of Motor Vehicles (RMV) for driver’s license updates and the Social Security Administration for social security card updates. Additionally, updates to state voter registration records and U.S. passport information are necessary to ensure all legal documents reflect the new name. For changes other than those due to marriage, such as changing one's first, middle, or full name, the process typically involves filing a petition with the court and may require a court order as official proof of the name change. This legal process ensures that the name change is not for fraudulent purposes or to evade creditors. Reasons for name changes can include marriage, divorce, aligning with gender identity, or the adoption of a minor child. It is important to follow the specific legal procedures in Massachusetts to ensure the name change is recognized by all government agencies and legal entities.