Book Off (ブックオフコーポレーション, Bukku Ofu Kōporēshon) (TYO: 3313), stylized as BOOKOFF, is Japan's largest chain of used bookstores.

Founded in August 1991, the company has had explosive success, expanding to over 850 stores throughout Japan and several overseas locations.

Another innovation cited for its success is the practice of shaving the edges off the pages of books using a special machine in order to make them appear newer.

[3] Book Off is frequently cited as a rare example of a corporation that was able to grow during the so-called "lost decade" of economic stagnation that followed the collapse of the Japanese asset price bubble, through its use of innovative business strategies.

[citation needed] It expanded from merely used books to used second-hand merchandise through its Hard Off stores, and to the video rental market through Tsutaya.