Header

Header may refer to:

Computers and engineering

 * Header (computing), supplemental data at the beginning of a data block
 * E-mail header
 * HTTP header
 * Header file, a text file used in computer programming (especially in C and C++)
 * A pin header is a mainly male style of electrical connector on printed circuit boards, including motherboards, providing links to external devices
 * Exhaust manifold, in automotive design

Construction

 * Lintels (headers), structural members in light-frame construction which run perpendicular to floor and ceiling joists, "heading" them off to create an opening
 * Lintel (architecture), a structural member in post-and-lintel building construction
 * Header (brickwork), a brick laid with its short side exposed
 * In piping, a manifold or length of pipe that connects multiple smaller pipes

Sports

 * Header (sailing): a term used in sailboat racing to denote a wind shift
 * Header, a herding dog with a specific method of interacting with its flock
 * Header, a headlong fall, particularly from a penny-farthing bicycle
 * Header (association football), use of the player's head to direct the ball in association football (soccer)
 * Header, a competitor in the team roping rodeo event who specializes in roping a steer's head

Other

 * Header (film), a 2006 film
 * Header (band), an Australian power pop band
 * Page header, in printing or typography the material separated from the main body that appears at the top of a page
 * Combine header or head, part of a combine harvester
 * Stripper (agriculture), type of grain harvester
 * Header, is a reference to an area within a document that serves to provide the needed context on the content that is included in the report. Headers are often used in reporting to segment content in a consistent manner from one report to another. In this context, especially recognizing the evolving technology display user interfaces, the Header information may appear anywhere within that display (aka Quip :).