Apple today announced that it sold (or delivered in the case of maintenance agreements) over two million copies of Mac OS X Leopard since its release on Friday.

The level of sales outpaces first-weekend sales of Mac OS X Tiger, previously the most successful OS release in Apple’s history.

The two million sales included copies sold at Apple’s retail stores, Apple Authorized Resellers, the online Apple Store, under maintenance agreements and bundled with new Macs.

“Early indications are that Leopard will be a huge hit with customers,” said Steve Jobs, Apple’s CEO. “Leopard’s innovative features are getting great reviews and making more people than ever think about switching to the Mac.”