If you are the administrator of a Mac computer, then deleting your admin account is not an option. However, if you are not the administrator and you want to delete your admin account without password, here is how to do it.

  1. Open System Preferences and click on the Accounts tab.
  2. In the Accounts section, click on the button next to “Admin”.
  3. Delete the password for this account and click on “Delete”.
  4. Close System Preferences and restart your computer.