Fake profiles (timelines) created to imitate real people (impostor accounts) are not allowed on Facebook.
If someone created an account pretending to be you:

Note: If you can’t view the profile (timeline) you’re trying to report, ask a friend to file a report for you.
If someone created an account pretending to be you:
- Go to the profile (timeline)
- Click the
and then select Report/Block
- Click This profile (timeline) is pretending to be someone or is fake
- Choose Pretending to be me from the type drop-down
- Click Continue to submit your report
Note: If you can’t view the profile (timeline) you’re trying to report, ask a friend to file a report for you.