A file folder is a folded sheet that holds loose sheets of paper.

Folder may also refer to:

Art, entertainment, and media Folder (group), a J-pop group Folder 5, a spinoff group from the J-pop group Folder Folder (band), an Italian nu metal band from Bologna

Computing Folder (computing), a virtual container within a digital file system, in which groups of files and other folders can be kept and organized, a.k.a. list of files FOLDER (disk compression), a disk compression component of PTS-DOS

Technology and transportation Clothes folder, a folding machine for laundry Folding bicycle, a bicycle which can be folded for compactness Folding kayak, a kayak which can be folded for compactness Folding machine, a machine used for folding paper Short Folder, a series of aeroplanes designed with folding wings for shipborne use (from 1913) Bone folder, a tool used to fold paper and similar materials by hand

See also Folding (disambiguation) Presentation folder