1. Queen Elizabeth II
Her Majesty caused something of a Facebook frenzy on joining the site in November 2010, with 40,000 fans rushing to "like" the new page in the first hour of its launch.
Facebook page: The British Monarcy
Number of likes: 505, 290
Typical post: "Next year, The Queen will celebrate her Diamond Jubilee. Thousands of official and unofficial events are expected to take place to mark Her Majesty's 60 year reign."