Change Your Account Name in System Settings

The fastest way to change your name on a Mac is through System Settings. Open System Settings, click your profile picture or initials in the top left corner, then select "Edit" next to your name. Type your new name and click "Done". This changes the name that appears in the top-right corner of your screen and in Mail, Messages, and other apps that pull from your account profile.

This method works on macOS Ventura and later. If you are running an older version, the steps are slightly different — you would go to System Preferences instead of System Settings — but the principle is the same.

Key Takeaways

  • Your account display name (what appears in the top corner) is separate from your account username (what you use to log in), and changing one does not change the other.
  • Changing your display name updates it across Mail, Messages, FaceTime, and other built-in apps within hours.
  • If you want to change your actual login username, you need to create a new administrator account and transfer files, which takes longer and carries more risk.
  • Third-party apps may not recognize a name change when ready and may need to be restarted or signed out and back in.

What Gets Changed and What Stays the Same

When you change your name in System Settings, you are changing your display name — the name that shows up when you send an email, start a FaceTime call, or appear in shared documents. Your actual account username (the short name you see in Finder under /Users/) does not change. This is intentional: your username is tied to file permissions, folder locations, and system processes, and changing it can break things.

If you need to change your actual username as well — for example, if your username is "jsmith" and you want it to be "jane.smith" — that requires a different process and carries more risk. Most people do not need to do this. Changing your display name solves the problem for almost all everyday uses.

How Apps Respond to a Name Change

Built-in Apple apps like Mail, Messages, FaceTime, and Contacts pull your name from your account profile and update it automatically within a few hours. You do not need to restart your Mac or sign out and back in for these to work.

Third-party apps behave differently. Some read your name once when you first sign in and do not check again. If an app is not showing your new name after a day, try signing out of that app and signing back in, or restart the app. A few apps may require a full Mac restart, though this is rare.

Changing Your Username (The Harder Route)

If you want to change the actual username that appears in Finder and the terminal, the process is longer and riskier. You cannot rename a username directly. Instead, you must create a new administrator account, transfer your files to it, and then delete the old account. This takes 30 minutes to an hour and leaves room for files to be left behind or permissions to break.

Before attempting this, make sure you have a full backup of your Mac using Time Machine. Then create a new administrator account in System Settings under "Other Users", log into it, and use Migration Assistant (in Applications > Utilities) to move your files from the old account to the new one. Once the transfer is complete and you have verified everything works, you can delete the old account. Do not delete it until you are certain nothing is missing.

Most people find that changing their display name solves what they actually need. Change your username only if you have a specific reason — for example, if you are setting up a Mac for someone else and the current username does not match their name.

Changing Your iCloud Display Name

If you want to change the name associated with your Apple ID (the name that appears when you send iMessages or use iCloud services), that is a separate step. Go to System Settings, click your profile picture, select "Password & Security", then "Edit" next to your name. You can change your first and last name there. This change syncs across all your Apple devices and takes effect within a few minutes.

This is different from changing your Mac account name. Your Apple ID name is what other people see when you contact them through Apple services. Your Mac account name is what appears on your Mac itself. You can change one without changing the other.

Troubleshooting When the Name Does Not Update

If you changed your name but it is still showing the old name in an app, try these steps in order: restart the app, sign out and back into the app, restart your Mac, or check that you are signed into the correct Apple ID. Some apps cache your name and do not refresh it until you force them to.

If your name changed in System Settings but Mail or Messages is still showing the old name after 24 hours, sign out of that app (in System Settings under that app's settings), wait a minute, and sign back in. If the problem persists, restart your Mac. Built-in apps almost always pick up the change within a few hours, so a persistent problem usually means the app needs to be refreshed rather than a system issue.

Frequently Asked Questions

Will changing my name affect my files or passwords?

No. Changing your display name does not touch your files, passwords, or login credentials. Your files stay in the same place, and you still log in with the same password. The change is purely cosmetic — it only affects what name appears when you send messages or emails.

Can I change my name back if I change my mind?

Yes. Go back to System Settings, click your profile picture, select "Edit", and type your old name. The change takes effect when ready. There is no limit to how many times you can change it.

What if I share my Mac with other people?

Each person with their own account can have their own name. When you change your name in System Settings, it only changes the name for your account. Other users' names stay the same. If you want to change someone else's name, they need to do it themselves from their own account, or you need administrator access to their account.

Does changing my name on my Mac change it on my iPhone or iPad?

Only if you are changing your Apple ID name. If you change only your Mac account display name, it does not sync to other devices. If you change your Apple ID name in System Settings under "Password & Security", that change syncs to all your Apple devices within a few minutes.