Nr.1 Landowner on Planet Earth

Acording to Business Insider:

Land: 6.6 billion acres of land worldwide including Great Britain, Northern Ireland, Canada, Australia and a few other spots here and there. Also, the all-important Falkland Islands.

Background: England's third (and most likely soon to be second) longest serving monarch, Elizabeth II retains royal title over The British Commonwealth and as such manages to keep her face on money throughout the globe.
With her 6.6 billion acres, Elizabeth II is far and away the world's largest landowner, with the closest runner-up (King Abdullah) holding control over a mere 547 million, or about 12% of the lands owned by Her Majesty, The Queen.

Read more: http://www.businessinsider.com/worlds-biggest-landowners-2011-3?op=1#ixzz3V2qXh7Dk