Reputation: 17849
Title sums it up. Almost identical to my recent twitter question at How do I get a Twitter username based on an email address?.
Upvotes: 2
Views: 3995
Reputation: 6376
Just use:
https://graph.facebook.com/search?q=[EMAIL ADDRESS]&type=user&access_token=[APITOKEN]
You can actually get the API token by going to Facebook developer documentation and clicking on the friends link. The token is in the url.
Upvotes: 2