Backlog

Backlog may refer to:

Science, technology and business

 * Product backlog, a list of requirements for a software product in development; see
 * Backlog (academic journals), the phenomenon of a number of accepted papers waiting a significant time to be published
 * Backlog of unexamined patent applications, all patent applications that have been filed and still remain to be examined
 * An argument to Berkeley sockets "listen" function representing the number of pending connections
 * Customer lead time in sales and operations planning

Music

 * Backlog (album), a compilation by Leftfield/Djum Djum
 * Backlog 1987–1991 (1995), an album by Show of Hands
 * Backlog 2 (2011), an album by Show of Hands