1.Login Your FaceBook Account
2.Click “Account” in the top right corner, from the drop down menu click on “Manage Pages”.
3.Then Click “Go to Page” on the pop-up window
4.. Then Click Edit page on the left sidebar under the Fanpage image.
5.At the top of the page. You will see Delete Page.
6. Click that link and you will be provided a confirmation page. And Choose Delete.