This paper doll is a chibi Mio Akiyama, based on the comic K-on!, the papercraft is designed by chinese designer Fruity. There is another version of the Mio Akiyama paper craft at the site: K-On! – Mio Akiyama Free Doll Papercraft.
You can download the paper toy here: K-On! - Chibi Mio Akiyama 2nd Version Free Doll Papercraft Download