How to Unregister a Facebook Account
Facebook provides two methods for removing your profile from its site. The first method, referred to as “Deactivation,” effectively hides the profile from other viewers. While your account is deactivated, Facebook retains your profile data for future reactivation. The second method, referred to as “Deletion,” permanently removes your profile data from Facebook’s servers. Once a profile is deleted, it cannot be reactivated. For both actions, people will not find you in searches. Understanding the difference between the two methods is very important, as you don't want to lose your business's data if that is not your intention.
Deactivate Your Account
Step 1
Go to Facebook and sign in to your account.
Step 2
Click the “Account Menu” button and select “Account Settings.”
Step 3
Click “Security” in the menu and click the “Deactivate Your Account” button.
Permanently Delete Your Account
Step 1
Navigate to Facebook and sign in to your account.
Step 2
Place your cursor in the URL text field in your Web browser, and type "facebook.com/help/delete_account" (without the quotes) and press “Enter."
Step 3
Click “Delete My Account” to permanently remove your account information from the Facebook servers.