There are a few things you can do to delete a gamertag from your account if you want to stop people from using it.

  1. Log into your account and click on the “Profile” button in the top left corner of the screen.
  2. Scroll down to the bottom of the page and click on the “Delete Gamertag” button.
  3. Your gamertag will be deleted and you will not be able to use it again until you re-register your account or create a new one.