Apple has an astonishing 63% marketshare, selling more than 10 times as many tablets as the next best competitor.

According to research by NPD, Apple has sold 13.6 million tablets in the first quarter of 2012. The next best competitor is Samsung, which has sold 1.6 million (7.6% marketshare). Amazon, with its Kindle Fire tablet (which also has yet to launch in most markets) has sold 900,000 units, for a 4% marketshare.

RIMs Blackberry Playbook has sold 500,000 units on the back of heavy discounting, as has ASUS’ tablet range – each has a 2.3% marketshare.

Apple’s dominance in tablets has been helped the company top the overall mobile PC rankings. Combined with products such as the Macbook and Macbook Air, it sold 17.2 million units in the quarter for a 22% marketshare, nearly double the next best competitor, HP, which sold 8.9 million mobile PCs. This gives Apple 118% year on year growth. Nearly 80% of Apple’s mobile PC shipments were iPads, which had 162% year on year growth.

HP has next to no presence in the tablet space, after the failure of its Touchpad tablets. The company has since announced it will be developing products using the Windows 8 platform.

The mobile PC overall sales rankings were rounded out by Acer (6.9m, 9% share), Lenovo (5.9m, 7.7% share) and Dell (5.6m, 7.3% share). Total mobile PC shipments for the period were down 15% overall to 76.2 million units.