The Sony Reader is a line of e-book readers manufactured by Sony. It uses an electronic paper display developed by E Ink Corporation, is viewable in direct sunlight, requires no power to maintain a static image, and is usable in portrait or landscape orientation.

Sony sells e-books for the Reader from the Sony eBook Library store in the US, UK, Japan, Germany, Austria, Canada and it will be coming to France, Italy and Spain starting in Spring 2012. The Reader also can display Adobe PDFs, ePub format, RSS newsfeeds, JPEGs, and Sony's proprietary BBeB ("BroadBand eBook") format. The Reader can play MP3 and unencrypted AAC audio files.

Compatibility with Adobe digital rights management (DRM) protected PDF and ePub files allows Sony Reader owners to borrow ebooks from lending libraries in many countries.

The DRM rules of the Reader allow any purchased e-book to be read on up to six devices, at least one of which must be a personal computer running Windows or Mac OS X. Although the owner cannot share purchased eBooks on others' devices and accounts, the ability to register five Readers to a single account and share books accordingly is a possible workaround.