Do you want to change existing display name of your Facebook account? Many users tend to goofup with name field and want to change display name of their Facebook account. Thankfully, Facebook does have option to change the display name.
Change display name of Facebook account
1. Goto Facebook.com & login into your account.
2. Hover mouse over Settings at top right & click Account Settings.
3. Click Change button next to name field.
4. You can type different first, middle and last name associated with your Facebook account. Then click on Change Name button.
Note - Your name will NOT change immediately. It will take upto 24hrs (or 48hrs) for new name details to appear in your Facebook account.